You're over-complicating the process. Simply carbonate fully in the keg and then use either the Blichmann Beer Gun, counter-pressure filler, or one of the boowie bottler assemblies to bottle from keg/tap... DONE... I've done this with several batches with solid results. Just be sure to follow the directions with the item you select. Personally, I have the Blichmann an the Boowie items. I'm finding that I like the Blichmann much better since it's easier to use, setup, and gives me solid results. Plus, when you stop pulling the trigger on the Beer Gun, it stops delivering brew.