Nate, you did have the advantage of not trying to cram 40 lbs of cat in a 10 lb box with that build There was definitely too much being stuffed in that singlepower amp.
this is fairly simple stuff
2 cans rotel tomatoes with green chilis (extra hot if you want it that way), drained
1/2 onion, chopped
garlic to taste
cilantro to taste
some lemon or lime juice