I am happy to say that I just took my baby out for her maiden voyage around the block, and as soon as I started pedaling all of my concerns and trepidations basically melted away. It's 52x16 until further notice, gonna see about a chainring tomorrow. If that doesn't work out, maybe spacers and a bigger rear cog. Frame size is a little bigger than usual, gotta keep the saddle pretty low; **** it for now. Big girls need love too.
But god damn is it nice to ride that bike. 50% old parts from my garage, 50% new parts from the shop, 100% fun to ride. Thanks for all your help.