Ideal Weight?

[Sf05]

Havnt started boxing yet, but I am interested, and trying to prepare for when I move close enough to a club. (See my post "Preperation") I was wondering what the ideal weight would be for someone who is 5'9? Right now, I am definatly not big enough, 5'9 and only 132 pounds. Will this be a disadvantage for me in a certain weight class gaining weight as opposed to someone who loses weight to make the same weight class?

I'm 5'9 and 133 and wondered this aswell...