I ordered their 3 keg kit about two months back and its fantastic. I cut off two of the picnic taps and bought 2 of their large refrigerator conversion kits
and stuck them through the door, I use the third as a picnic tap on the inside (for beverages that are consumed less frequently.)
I already regret not getting perlicks (forward sealing taps) as mine are starting to stick, but I will be cleaning them after the next kegs are kicked.
In terms of extra kegs, check out pedalbiker in the classifieds, I ordered 4 kegs from him and they came in pristine condition (with colored tops even!) or chi company.
Lastly, I would check around you for fire extinguisher refill locations to see if they will refill CO2 tanks on location, you wont want to give up that shiny new tank!