Recording two acoustic guitars. One EADGBE the other 1/2 step down...???

What would be the best way to accomplish this. I have a dreadnaught that I string with either medium phosphor bronze or Martim Bluegrass (hybrid set). The other is my "comfortable box", my Taylor BigBaby. I use Elixers on it and I keep it tuned 1/2 step low so I can bend and add a little vibrato with it. I have something I want to record in standard tuning. The Takamine (dreadnaught) will be used for most of it and for ll the rhythm, which I will put down first. Then I want to add some acoustic lead with the Taylor.
 
I have several ideas and a capo is not in any of them, I do not want to use a capo...
I have thought about recording all the guitar tracks and bass in standard tuning then adding a midi keyboard scratch track... lower the pitch of the scratch track 1/2 step and then record the lead part. Or I guess I could copy an audio track of the recorded parts into a stereo mix track, mute all the original tracks, convert the stereo track into a groove track and use it when recording the lead. Erase the stereo track then convert the lead track to a groove track and raise it 1/2 step... however, I don't know if I am going to lose any fidelity by doing something like this... or is my thinking flawed, is there an easier or better way or should I just tune the Taylor to standard and do the best I can with it. It just sounds so much better tuned a half step low, being a 7/8 size guitar and the Takamine tends to a little fret buzz if I tune it 1/2 step down... I reckon I could put heavier strings on it and maybe it would not buzz any... I don't know but th Martin Bluegrass strings I put on it are fairly new and I hate to waste them, but I will if I need to. 
 
Not sure how to go about this but I want to try it tomorrow... or at least over the next week.
 
Thanks for ny help. I checked through the G3 videos I have and glanced at the manual. I will check out X1 POWER later too but if you know a trick... I need it.
 
Thanks!
 
Julien

ZZZZzzzzzzzz.

As JSkeen said. Just play it. I played all my life on guitars tuned two semitones down. I think it's a benefit that voicings automatically differ when I play together with another guitarist who tuned standard. Who cares that my E looks like a F#? It sounds pretty darn E.