shirt: i seen a some jackets with removalable pads like my joe rocket ballistic 3, i never removed it though to much zippers and not point. there are under shirt ,and water proof btw any text. isn't water proof.

tire: i'm using M1 . its warm up pretty fast and sticky
performance: what he say ^^ fullsystem are nice but slip on is cheaper,

storage : u can get a trunk kit for ur bike around on here. i used to had a trunk in CBR F2, its really handy. u can put stuff in ur jackets but ur jacket going to weight like 50, 80 lbs , imagine wearing that for 5 hours

fog. : try to breath though a tube. or wear a Special thin ski mask, or just ride without visor

edit oh yeah and the most easy performance mod is gears. get some bigger gears.