I'm on the home stretch!!
Yesterday the part from Grainger arrived and I hooked up the pond pump to the cooling lines only to discover I had 2 kinks in the copper coil inside the keezer from setting the keg in. 2 patches later I had that fixed and hooked up the pump again, I could see the cooling water leave the keezer, but nothing was coming out on the output side.
Assuming I had a kink in the elbow going up to the deck, I tore the whole line apart all the way up to the bar and tested the line on level surface, worked fine, no kinks! So, lesson #1 - a 550GPH pond pump doesn't have enough power to lift 10 feet vertical!
$170 and 3 trips to Home Depot for PVC adapters later, I now have a 2000GPH pump which is working beautifully! I finished hooking that up tonight. The reservoir is a small office trash can due to the massive pump that has to be submerged. So much for a second keg of Summer Shandy
I will have to finish this half barrel of Lite, then go with 2 quarter barrels to utilize both taps (which was the original idea anyway)
Also tonight, I sanitized the beer lines and got them hooked up. My first pour is a little foamy, but I was playing with the CO2 pressure (finally got it where I think it should be) but the beer is still a little warm from the keezer being unplugged for 2 days while I redid the plumbing. I think it'll be fine once the temperature stabilizes.
Final result from my neighbor's view
Still left to do:
1. The perfect pour
2. Test the tap temperature vs the keezer temperature
3. Build a drain into the top of the bar (this will be easy, just install on the bar top and run a piece of vinyl tubing down through the floorboards to drip into the plants