I agree with bud luv to go with a squat indica. That will make your life easier.
Depending on how long you veg, and if you are also going to top at all, 9 or 16 females is a good number. 16 would be for an untopped plant.
Female clones off the same mother will grow more uniformly than from-seed females just FYI.
Plants near a wall will be fine as long as you keep steady air flow around them.