I am pretty confused about beer line length.
I am building a 5-tap keezer with 4mm ID EVAbarrier tubing. I will have 4 Perlick 650SS taps and one stout tap, maker unknown. I have not kegged anything for about 16 years, so I'm not sure what pressure I used to use. I thought I'd just go with 10 psi for the Perlicks since I saw that number on the web a lot.
I'm planning to start at 42 degrees for no particular reason. The plan is to have one stout, one lager, a wheat, and an ale or two most of the time. I figure it's better to serve an ale a little too cold than to serve a lager too warm.
I see people online coming up with different figures that aren't very close, so my impression is that most people don't know what they're doing. I saw a guy on HBT saying he uses ~10 feet for every beer. Reasonable?