Get a mercury vapor light. It is heat and UVB in one bulb (and does it better than the best separate lights).
Wardley is...Wardley. Get a better food. I would use Zoo Med, Nutrafin Max Turtle Gammarus pellets, and even high quality fish foods like New Life Spectrum (they are in the same ecosystem eating the same foods as fish).
I personally don't feed like food to anything. It is not as nutritionally complete, balanced, can introduce pathogens, and can increase aggression. This is an adult so I don't think there will be a major impact on aggression unless it has never been fed live before. Tank raised fish are a good option out of all the live foods though.