A few comments on the fish list. Definitely increase the kerri tetras, they are shoaling fish and groups of minimum 6 but more when you have space (as you will) are better, so 10-11 total will be fine. Try to get a mix of males/females (the red adipose fin is the key) maybe 6m/5f.
The loach Botia histrionica (interesting species name
) does better in groups as well, 3-5 would be good, you have room as they max out at 5 inches. Here's some good info on them if you're interested: Botia histrionica — Loaches Online
Bristlenose plecos can grow to four or up to 8 inches depending upon the species; I would be careful if they are the larger when mature, especially with the Botia's, not so much concerned over compatibility in behaviours but simply their size taking up the substrate level.
I've kept both rams, but not with dwarf gouramis so I'll leave their compatibility to someone who has the latter fish experience. But on the common ram, Mikrogeophagus ramirezi, they are very sensitive to water parameters and water conditions in general. You don't mention your pH and hardness, but unless the water is soft and slightly acidic, this fish will not last long. And they need warmth, 82F or higher. The other fish are fine at normal community temperatures of 77-79 but the blue ram would not survive with this. The Bolivian (Mikrogeophagus altispinosus) is quite different in this regard; I have a male in my 115g and although I have very soft acidic water, this species can do well in moderately hard basic water.