I think a kit is the way to go if you have not kegged before. To expand the kit in the future is pretty easy, you just need more taps, kegs, lines, and a CO2 manifold. A lot of people get the kit from Midwest. I bought a kit from Kegconnection. If you find a good deal locally for a CO2 tank then just drop the tank from the kit. Try a welding supply store to check prices on CO2.