I refurbish and sell bikes on CL too, but not on they scale you're doing it. I wish my wife would let the bikes take over but she treats them like some kind of alien invasion, not like the two wheel friends they are. As it is, space limits me to about 30 bikes, but I'm building a shed of sorts out of a truck shell to expand that just a little.
I have to commend you for finding something that makes you really happy and embracing it, many many people fail to do so even after nearly dying from a lemon sized brain tumor. I also love the idea of a reunion ride, how fun! Sometimes I wonder what happens to the bikes that leave here, especially the ones that leave as frames only.
Kemmer