Are you looking for new or used? On the new market the choice for manual focus 35mm is pretty slim.

I'd chime in on considering MF but you mention availability of lenses. How many do you want/need? What focal range? One advantage of the common 35mm systems is the wide range of relatively cheap lenses you can buy. With MF once you get beyond a normal lens you're choices will be fewer and more expensive. The stuff is out there.

If you're doing most of your prints at 11x14 then you really are at the MF or larger level. Unless you're looking for the look of 35mm enlarged that big.