I'd love to see what the pressure and temperature would have to be to make a 3 ft line work myself.

OK here's my math, tell me if I'm wrong, I very well could be:

If the temperature within the beer is 38ºF and I want to keep my beer at roughly 2.4 volumes, I would need 10 PSI per a standard carbonation chart. I add 0.25 PSI to this because of where I am (Austin, TX). The city is roughly 500 ft above elevation and 1 PSI is needed for every 2000 feet.

So pressure needed is 10.25 PSI to maintain that CO2 volume within the liquid.

I subtract the static and dynamic resistance from this pressure to balance the system.

Static: My static resistance is .645 PSI (0.43 PSI per foot increase from middle of keg to my faucets. So 0.43 PSI X 1.5 feet = 0.645)

10.25 PSI pressure - 0.645 PSI static resistance = 9.605.

I need to make up the rest of the resistance in the tubing.

Dynamic: I have vinyl 3/16" tubing = 3 lbs/ft. 9.605 PSI is roughly 3.2 feet.