Good info, thanks guys.
Yes, I'm built weird, short legs, long torso and arms, cycling inseam (barefoot, book in my crotch) is 32". Buying shirts is a pain, sleeves are never long enough.
May end up on the Large after all, waiting on some info on the one piece cockpit, def don't want a bunch of spacers on the Medium. I run one spacer (plus the collar) on the Tarmac, and could do without the spacer, but didn't feel like cutting the steerer again. Want to make sure I get it as close to right as possible, since there's no adjusting with the one piece setup.
My saddle height on my last two bikes (from my Retul fit) is 763mm, haven't had any issues with that. I've used 100mm and 110mm stems with no issues. Bar drop is 97mm.