If you're wanting to keep the front hub, and keep the rims, sure. But you can buy a new set of cassette wheels for $150-200, and with the prices you've specified, you're already at about $100 for the rear, which is what it'd cost to buy one new. I'd consider a hub swap if you were keeping the hubs and getting rid of the rims, but the other way around? Not really worth it, IMO.