Hi Conrad, the vocals in
Love is a Many Splendored Thing are very nicely done!!! So much so that the recording everything you possibly can via performance and only using Melodyne for the "tightening you shorts" stuff might be your quickest and most effective workflow (plus the credit should go to the source (you), not Melodyne, IMO).
I realize you are new, but SONAR X3's "Comp mode" is the quickest way to do vocals, by far (for me). For the sake of time, I will often run a take until I hit a spot I know I do not like. Rather than "play through" as many recommend, I have gotten into the habit of stopping, backing up a couple bars, and continuing. The reason for this is I have identical recording settings (and am in "studio mode"), so when I finish I know I have a complete "good" take with those settings. I have burned myself in the past with punch in/out because of the settings being "unknown" and the variation in performances can be audible.
I am not familiar with your interface, but you can easily record new tacks with "Input Echo" disabled, and monitor the master bus via headphones plugged into your audio interface (so it doesn't feed back into the mic). If you do not fully cover your ears, you have achieved "direct monitoring" sufficiently without having to fiddle with software anyway. If you have direct monitoring on your interface (which most have), it simply routes the mic signal to the headphones directly (same idea, all about latency). SONAR will then synch the tracks based on your latency without any modification by you (in most cases). There are a few instances that will require this; but honestly, until you get to those hurdles appreciate all of the things SONAR does for you automatically (which is a lot).
As far as signature, it helps when folks ask a question, since some are based on the system/interface they are running. All the detail given in a post gets the best and quickest response. It is frustrating to readers to see something like "Why won't my MIDI work???" and that is about the crux of it. It helps others help you (and this forum is an AWESOME group of folks). You can modify your signature by clicking "User control Panel" in the upper right, and then "Signature" in the left navigation pane. Of course, it is not a must, but helps a lot.
Unfortunately, I have been enveloped in other tasks lately, so music has taken somewhat of a back burner. I think this is why I continue to stay an "avid hobbyist," since I do it when I can but still love it to death "just because." Perhaps one of these days I will get around to allotting time "just for music," but until that point I sometimes feel like a closet recluse when I am doing music, lol. I signed up for a music theory course for next month (forget the exact name now); since I feel that is my biggest hurdle, but a part of that was hit on in the Develop Your Musicianship course, and I realized that maybe I do not give myself enough credit at times.
As always, advice is free, so take it for what it is worth

(Actually, I told you when this all started that I do not abandon people... so I do read things, just not always respond.)