Are creek chubs schooling fish? I think they are bur I just want to make sure. Also could I keep a log perch with them?
Yep, Creek chubs are schooling fish, I like your 55g stock list, totally awesome (without the Warmouth, they'll eat anything that will fit in their mouth); I think a 150-200 g is big enough for the stock list you have as long as you have structure, the Brown Bullhead as stated by Mn Rebel shouldn't get over 18inches in the tank, if you get him at about 5-8 inches and give him a cave or driftwood to hide In you should be fine. Crappie are very pretty fish, I haven't ever seen a Sacramento Perch in real life (and I used to fish the Sacramento River and the American River in Sacramento CA.) but Ive heard they are less aggressive than Bass and Sunfish so you should be fine.