Dude, if you play mostly clean, get low output pickups that have low string pull so that you have enough sustain without a compressor or overdrive. For the same reason, it would be wise to not increase the number of pickups unless necessary. You can go for wiring techniques like coil tapping/splitting and phase reversal to increase the number of tone options.
Most actives are also fine as they too are generally weak magnet pickups. Actives do not usually require routing as most guitars have space for a 9v battery in the control cavity.
Actives allow you to keep the noise in your signal down but then you need to change batteries once in 6 months. Also actives (EMGs in particular) may sound a little compressed on cleans. some people like this while others don't. Another advantage of actives is that the output signal is low impedance and hence you can drive them through a long cable/chain of effects without losing the top end of your signal.
-- My current rig
Guitar: '98 MIJ Ibanez RG520 QS w EMG 81/60
Amp: Laney LC15R Tube, Fernandes 20W SS
Pedals: MI Audio Tube Zone Overdrive, Boss OD3, CS3, MT2, HM2, DS2, CE5, DD7, TU3, Beta Aivin DD2 Delay, Dunlop Crybaby 95Q, Stranger Vol Pedal, BBE SupaCharger
Others: Yamaha RBX 374 Bass, Yamaha MM-6 Synth, M-Audio Fast Track, Shure SM-57, Heet Sound E-Bow Plus
Wanted(pm if selling): EB VPJr/Boss FV500L,Ibanez w Original/Lo-Pro Edge