I see no reason for removing 1st gear, just don't use it on a regular basis...if you ever plan on driving your car in traffic (ha, you live in the Bay Area, like that'll never happen
) an ultra low 1st gear is nice for idling down the road.
like Geoff said, just don't beat the living daylights out of it and it'll survive.. do a search, there is a current thread on the trq/hp ratings and success of some installs behind higher hp motors