Let me chime in on the why 100 watts chorus. As a soundman, it is my firm opinion there is no room short of arenas & stadia where 100 watts worth of guitar is useful - & you'll be going through FOH long before you get to that size, so really not even then. The classic, iconic, Wall'O'Amp that we all know & love was, indeed, once a neccessity, but the Grateful Dead & Alembic invented the modern PA in the early 70s. Do your engineer, your bandmates, & your ears a favor; get something in the 20-50 watt range (or less) & mic it (if you can't hear yourself, tell everyone else to turn down - and if the drummer's too loud, put it in the monitors.
Peter