If you don't mind doing a little surgery, I'd highly recommend doing the SSD swap yourself. I recently did it on my current gen MBP and it took about 5 minutes to do the actual swap and then another hour to get everything reinstalled. The biggest advantage is that the swap is much cheaper (I paid $170 for a 120GB OCZ SSD vs $300 for the Apple one) and the actual SSD performance is better as well (from my research Apple uses Toshiba which are decent, but the Sandforce based ones, like the OCZ one, get the best performance out of the non-SATA III drives).
I'll second that. Even the next step of taking out the optical drive isn't too tough, at least on a pre-unibody white macbook. Runs a bit hot/loud with 2 drives though.
The SSD drive is huge. I got my first one with my Cr-48, makes a world of difference. I would add 3g if possible.