Here are some codes from the ‚Äú1999 National Electrical Code Book‚Äù
(1)Spacing. Receptacles shall be installed so that no point along the floor line in any wall space is more than 6 ft (1.83 m), measured horizontally, from an outlet in that space. Receptacle outlets shall, insofar as practicable, be spaced equal distances apart.
(2) Wall Space. As used in this section, a wall space shall include the following:
a. Any space 2 ft (610 mm) or more in width (including space measured around corners) and unbroken along the floor line by doorways, fireplaces, and similar openings
b. The space occupied by fixed panels in exterior walls, excluding sliding panels
c. The space afforded by fixed room dividers such as freestanding bar-type counters or railings
You are required to have at least one GFCI in an unfinished basement but since you are fininishing yours you don‚Äôt really need it, but personally.. I would put one in the head of the circuit. Just start your first receptacle at a convenient place, incase you do get a nuciance trip you can reset it with relative ease.
Let see, height of your receptacles. I usually put my hammer down head first and then put the bottom of the box on the base of the hammer, approximately 13 inches and for the wire make sure you bore the hole in your studs at least 12 inches above the box.
I would put these receptacles on a 12/2 RX or a 12/2 MC cable if sheathed electrical cable isn‚Äôt permitted in your area, that‚Äôs a 20-amp circuit.
I would put your lighting on it‚Äôs own 15 amp circuit just figure out the watts √∑ voltage to find out how many light fixtures you can install ( I assume your going to be installing recessed Hihats )