Doesn't a smaller pulley spin the belt faster? In any case, if you don't have AC or P/S, you might want to look into an OEM Honda N1 crank pulley that only drives the alternator. It's a factory piece that comes on the bare-bones CTRs. It usually costs about $100. As for getting the bolt off the pulley, I use this tool:

http://www.thetoolwarehouse.net/shop/SP-60100.html
With my block mounted on my engine stand, it's a simple matter of using two breaker bars, one for the crank tool, and one for the socket. I use a 5ft steel pipe on the end of the breaker bar with the crank tool and position it so that it's wedged into the floor when I turn the bolt against it, and then I use my 4ft jack handle on the other breaker bar to turn the bolt. Comes out very easily. I'm not sure if you want to to do that hust to change pulleys, but it may be a good time to change the timing belt and water pump, since there's no real way of telling exactly how old they are, and it's much easier to do it with the engine out of the car.