CCVM coil help, finished with pics

[Sailman]

Well I think I'm gonna start on my reflex coil for my CCVM. I have settled on a double wound copper quarter inch diameter coil.. I already have some sections of 2" made up but I have a question about what length would be better above the tee. I already have a piece that is 6 3/8" long but I'm wondering if that's gonna be too long to run an 8" long coil. I also have a short piece of pipe that I could make a shorter piece if that would work better. Which one would you suggest? I want the pipeline up to support the supply and return end but not so long that I waste tubing. The plan is to make the coil to fit the stainless steel fittings and then use copper mesh to take up the difference between the fitting and the top are tube diameter.