Sounds like you are shooting for overkill. I run a very nice stereo, about 1500 watts peak power, 2 10" subs, 4 speakers, aftermarket panasonic deck, neon accect lights, etc. Plus all my factory accesories including A/C, etc. I run a 105 amp alternator that is from a 1985 Camaro with a 305 "G" code engine, if I remember correctly. It was a tip in CHP a while back, and I am VERY pleased with it. My headlights stay bright as can be even with the subs pounding. That is without a capasitor or a trunk battery, just the supply from the alt.
I can't immagine that from your post you would be needing more current than that. And best of all, I can walk into any autoparts store and walk out with a new alt. in hand. Can't say that about the one wire jobs.
67 Pro-touring Camaro-327, 9:1, Comp XE268 Cam, Perf. RPM Intake. 750 Holley, Sportsman II Heads, Ceramic coated headers, 700R4 trans, 17" Amer. Racing TT2's, 12" disc brakes, custom stereo, black with white stripes, cowl ind. hood.