Re: About to install 4 push/pull pots...
I do a lot of alternative wiring (its a sickness), and to me the most versatile is the JP system. The most bang for the buck. I like the fact that the outer appearence of the guitar is unchanged and there's no unreliable batteries involved. I have it in warm-toned guitars: Epi LP's & 335's. It pretty well covers the bases of series/parallel/coil cut/phase. That's most of what you can get by changing current flow & magnet polarity.
Other options will do some interesting things, but not as many, and are useful for when you don't want to go all out:
Spin-a-split - by converting the tone pot to a second volume control for one of the coils, you get coil cut & any degree of unbalanced coils that you want. This is the easiest alternative wiring & the cheapest, yet very versatile. You can do it on both PU's if you want, for endless blending options.
Coil cuts - Half the JP system. Keep the screw coil active on the neck, and the slug coil on the bridge. This gives you the warmer & louder bridge slug coil, plus you're noise-free when both on are together with coil cuts.
Phase/Series - the other half the JP system. You get a full volume out-of-phase sound, instead of the usual volume drop. Series for two PU's in full HB is loud, dark, & muddy. It's best when the neck is in coil cut & the bridge is in HB.
Parallel - Whereas coil cuts give you 50% of the ohms of a full series HB, parallel gives you only 25%. The low output and bright, thin sound is not really usable on the bridge, but viable on the neck. Many of us prefer coil cuts to parallel, as the sound is louder & has more bite, without much increase in hum.
Vari-tone switch - Great on paper, sucks in real life. Too many capacitors; the tones are weak & low output. Big disappointment. Nobody followed Gibson on this, which should tell you something (whereas everyone copied the super Strat concept).
I recommend push-pulls instead of mini-toggles, as there's no drilling. If you change to single-lead PU's later, you could end up with a guitar looking like a piece of Swiss cheese, which is not condusive to maintaining resale value. The JP system isn't hard; I did it on my second re-wiring. Print out the excellent diagram on this website & follow the colors. Use the SD diagrams for everything you need and you can't go wrong.