One other thing.....
You mentioned mixing in stereo as opposed to mono. Can you explain this to me and what you mean by it? You may be over-doing things here which may be making things more difficult for you. Allow me to possibly clear up a few myths for you...if you know this already, please forgive me....I'm just trying to help. :)
Stereo is good for synth stuff....which is really stereo imaging due to the effects on the synth or the wave form panning/oscillation. True Stereo is two mono sources independently playing the same thing, but differently due to human timing inconsistencies.
For example, if we recorded a guitar and took two lines out of a processor and recorded on to two tracks in Sonar, (or one stereo track using left/right inputs) we would NOT be recording in stereo. That's two mono tracks playing the exact same thing. Some guys think that's stereo. Distortion or a clean amp sound with two outputs going to disc is not a stereo effect.
If we recorded one track of guitar and then went back and played the exact same thing and recorded it to another track, then we have stereo. Cloning that track of the same material is not stereo. Now, if you had a processor and put a stereo chorus on or a ping pong stereo delay....you'd get stereo imaging, not stereo. Why? Because just the effect is in stereo....not the actual guitar sound or playing because it is one take. If we played a guitar on one track and cloned it, then moved the cloned track back 10-15 ticks in Sonar....still, stereo imaging. But it will sound more stereo-esq.
Most of us record everything in mono these days because, well, all of our instruments are truly in mono unless we can play two different, independent tracks at once....which none of us can. LOL! With the stereo interleave option in Sonar, it allows us to take a mono track and simulate stereo....BUT, you must have a stereo effect going on. But it's still not the same as recording two, independent tracks of the same performance.
When I record and mix drums, all the drums are mono other than overheads. I put mic's on every drum in mono. From there, I put effects on the drums and the effects make the drums sound more stereo...even though they are not in stereo. Because they pan around when I hit toms just means I panned mono toms.....this creates a pan field. When the snare gets cracked, I'm using two mics but they are not used in stereo. They are panned center...one top mic, one bottom and controlled as an entity, not a left and right signal. Mix the two signals centered, put a stereo reverb or an impulse on the snare, it sounds in stereo as the reverb moves the drum outwards. Understand?
We do not need two channels for instruments.....so if you are doing this for everything, it's not necessary and you may be increasing your track count without the need. If you are using synths like piano, strings, stuff like that, yes, you can go with two channels. That is the only time (other than drum over-heads/drum rooms and acoustic guitar stereo mic situations) where I use two tracks.
When I use a drum module, I set it up just like I would a real drum kit. When the synth loads up, I make every drum piece go to mono so I have full control. When the over-heads get created, they usually create two channels. I pan one left, one right. The same for "room" on drums. They are the only stereo situations in the drum kit for me. Everything else is mono and panned accordingly, sent to buses and effected. Any stereo effects used on individual drum tracks or on the drum buses will make the drums appear more stereo-esq.
Now I can get saucy and record an electric guitar with several mics. Two at closer range, two at the back of the room in the corners. Only the two at the back in the corners would be stereo panned left and right picking up the reflections. AND....due to me using one guitar signal in one performance, the only thing giving me stereo is the sound of the room along with the delay from being all the way at the back of the room. I'm still using one sound source so in a sense, this is the equal to me putting a stereo reverb on a mono guitar track and enabling stereo interleave in Sonar. The stereo thing for tracking is not really needed man, honest. Certain situations you can use it, but for most things, mono works fine with a stereo effect UNLESS you are layering something and playing it several times and processing differently.
Do me a favor. Get your synth, fire up a sound you like and record it into Sonar in stereo like you always do. When done, pan the synth to the left even though it's on a stereo track. Add another stereo track....record the exact same part again and play along to the part you already recorded. When done, pan the track you just recorded all the way to the right. Now play them both back and listen. That's true stereo based on two performances with subtle human timing inconsistencies.
Now, take the track you have panned to the left, and pan it center and mute the other track. That is your stereo imaging track you always record. Now repan to the left and unmute the other. Hear the differences? That's two mono tracks independently played to create true stereo. It sounds bigger and wider, notice?
Anyway, my purpose here is to try and point you in the right direction without having you over-do anything. This field is way more simplistic than people lead you to believe. I wish some of you guys lived near me so you could come and hang with me.....I'd show you how easy it really is...and you'd agree with me and tell ME how to mix. The key is....tracking good instrument sounds and having a good, tuned listening environment....*most* of the rest is all technical jargon in my opinion and reading for the sake of reading. Hope this helps.
-Danny