Ok so this paint photo is roughly what I want to do to my basement. The lights are 6 inch recessed lights. The fireplace blower was on the old 15 amp circuit so I dont see a problem there. It currently has the old black wiring that is on a 15 amp breaker. I plan of replacing the wiring maybe leaving the home run. Can I place all of this on one 15 amp circuit or should I split the lights and the receptacles to two 15 amp circuits? Or Should I use one 20 amp circuit?