heater on full power would be 1500, but will be running it on medium, not full. Might push 150 watts for all pumps, cant see over 250 for all lighting (above tank for plants not fish), I can see 1200watts total. Simple is the game, no need for 10 things in each tank. Confident a 15amp would do fine, 20 just gives me some room.
Running out of things to do in house until the windows come in and carpet so I think tmw I shall start the tank build, 3 weeks until I have to be in that house, time is flying.