Also I was just thinking... I can get the HOB to start (since I already have it) and cycle the tank. Then get 2-3 otto's and a couple snails to keep it going and add the canister filter and get that seeded then eventualy remove the hob to try and convince my g/f on a 3rd tank :-P
This is what I have now for my co2 setup...
Milwaukee Regulator with bubble counter
5# CO2 Aluminum Tank
And I am leaning towards a Rex Riggs Reactor
(easy to build and inexpensive to make)