You also have to consider your tanks. Jobo tanks are the most modular since they can do 35mm,120 and 4x5 all in the same tank. If you decide on Jobo tanks it's going to be pretty tempting just to get a used CPE-2 for $200. A home built system is going to cost the same and require more effort. Making your own tanks is not trivial and reels even less so.