I plan on having 216 watts over my 55 gallon One HO aqualife fixture and one coralife NO fixture.. With heavy amount of plants a lot of rotala and so on. I plan on doing a pressurized co2 system with a inline diffuser hooked up in my canister filter. Then maybe adding a powerhead to move water for my congo's

1. Should I use a air stone when my aquarium lights are off and my co2 is off as well?

2. What is a good plant that will cover the substrate in front? (baby tears, or dwarf sag)

3. Do I have enough lighting? 

4. What is a good Anubis that will grow full with nice big leaves?

5. How should I put my lights..Example: have the aqualife up front then coralife in the back or switch them?

6. I will only keep my co2 on an hour before my lights come on..then while they are on...then an hour after they turn off. Overkill or no?

Please help me out or give me any pointers will appreciate it