My rig is pretty much exactly the same as yours. And I got it pretty much the same time you did I think.
Ok, your ram is a little faster, but my psu is bigger
edit: IMO ssd's are priced decently enough these days to justify their purchase. At least for the smaller sized drives. Prices for anything > 128Gb is usually outrageous. But yeah, for an OS drive (meh, 30Gb is plenty), definitely worth it.
I would want my games and programs to fit on it too, so I will need much more than that. Regardless, it is still too rich for my blood. I don't think they will be cheap enough for me to front the cash for another two years.