i think it is wise to start small.....you can always add later.....just don't scimp on ballasts, cause you will always need high quality, and you will need to rely on them in any space you build, same with a dehum-d, get a good one......try to find a sale unit window a/c for now, as this is likely to be a big upgrade, and when you are done with it, you can always find an elderly person in your hood to give it too.....don't forget the karma brother.....cough...cough....beans....cough......cough.....that shit will power the whole project....all day/everyday day.....