What else are you stocking in the tank? You could do 2-3 bn plecos in that tank.
I prefer large shoals of corydoras. 12-15x. Extremely active and constantly sifting through the substrate for fallen food particles.
I would only do 1 bristlenose pleco, they are territorial when they grow up if you get 2 males. You could do corys, kuhlis, or rcs. In my 40 breeder I have 8 corys, RCS, and mts. Would only do 12 cory max
Otos like cooler water. If you're set on them you need to switch up your stock.
2x Bolivian ram
15x neon tetra/gold Barb
8 x peppered cory
I don't like mixing loaches and corydoras in this size tank.