Steve ... Dude ... RELAX!!!!!
first of all, you have absolutely no control over the number of quilts in the noodle. the ideas, intentions and desires will squeeze themselves into every available nook and cranny of brain space whether you want them there or not.
if making lists and jotting down construction ideas feels right, then do it. if that isn't your "thing" ... don't do it.
if you already have fabrics for a specific project, stack them together. if you already have the pattern, put that on top of the stack. just don't be surprised to find half or more of the fabrics gone by the time you get around to that pattern. you'll have "borrowed just a little" here and there for other quilts.
don't be afraid to change your mind.
you are allowed to obsess ONLY over the quilt(s) you're actually working on at the moment. the others can wait their turn. :wink:
you already have a day job, dear. DON'T turn this into more WORK. it'll suck all the fun out of it for you.