Pullies do free up some hp but can cause more of a headache then there worth. They were on my 93 and were causing charging problems at idle, and the ac wouldn't be as cold at idle also. I replaced them with stock pullies and it was all fixed but I did notice the car lost a little pep.
I wouldn't get a CAI till you do some induction mods (MAF, TB, intake). Just remove the air silencer and you just bought yourself a CAI.
IMO you should spend the money for the pullies and CAI on a set of new gears
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79 Hatch: NA 347, Stage 2 Canfield Heads, Victor JR. Intake, Blueprinted Holley 750 HP, Solid Roller Cam, Shooting for 10's on motor
93 LX: Tremec, dual friction clutch, fms flywheel, Hedman shorties, O/R H-pipe
Ricer hater's club member #49