id leave the alternator std :? wont start chewing belts then
im running twin optima's and a std 65amp alternator
no problems winching, even with both going together whilst running the cooling fan
worst case i have is popping the alt belt off
id run twin type 096 car batterys in parrallel, i no some challenge people that use this set up aswel,
there cheap, good solid setup for under 100 squid, unlike 120 quid each for a optima or odyssey ect ect
just honest opinion
you dont need to spend silly amounts of money on batterys as you simply wont be demanding that much from them
dan