Thanks for all the responses!
A couple more questions...
I have the typical freezer-over-fridge unit. It holds 4 cornies and a 5lb CO2 tank snugly. Assuming I will need all of the beer lines to be the same length, how long should I cut them to allow for opening the door periodically? 7'-8'?
start with 10'. you may want to shorten them to balance your system and avoid glasses full of foam. but it's a good start. you should also then be able to determine the shortest length you can open the fridge with.
At 10', I'd be looking at about a 20PSI serving pressure depending on the hose ID, no?
Since the kegs will be under continuous pressure, will they become overcarbed over time? As my system is now (cobra taps), the kegs are under pressure, but I keep the valve to each keg closed until the serving pressure gets weak. Maybe this is not a concern?
With the new draft system, I guess I will have to force carbonate individual kegs over several days at whatever the serving pressure is since all the kegs will be under the same serving psi? Make sense, or is there another way?