Not sure about the frogs, I have no experience with them, but the mix appears OK. You should probably have a few more loaches, as most of them like company, depending on what they are.
The rams may be a little fussy about the water quality. Keep it very clean for them. They prefer temperatures of 78F to 84F, and pH levels of 6.5 to 7.0. They can be nervous, so don't add anything overly rambunctious or too aggressive in with them. What you have listed is fine.
You seem to already be aware that the Leopard Pleco could be a problem as they grow to nearly 2 feet in length.
The serpaes and bleeding heart will usually do well together. Watch the serpaes for fin nipping.
Pearl gouramis are probably one of the most peaceful gouramis I have ever kept and the single dwarf gourami should be fine on its own.
Cats: Small quadrupedal mammals that share our passion for fishkeeping, although for somewhat less then altruistic reasons.