Agreed ?I think your list would bo OK with 1 BP and without the dozen tetras.
I will say, I've currently got a 7" cichlid in a 55 gallon with only a swordtail and a tiny clown pleco as tankmates. Water changes twice a week are necessary, and when I do them, the gravel is filled with gunk. Big adult cichlids poop alot, and plecos do as well. If two 50% water changes a week sounds like too much to you, I would keep the stocking much lighter. BP + bristlenose alone will make a lot of poo.
Big cichlids, pleco, bichirs poo a looootttttt.
