Hey, your water lines run over head, the weight of the water dropping down to shower head will off set extra elevation to run over head. You lose .433 of a pound for each foot of elevation. Or 2.36 feet equals 1psi. If you need more flex ,I use soda hose for my water systems. Lowes has it,clear tubing with strands in it. If water freezes in it ,it doesnt break. You need barbed fittings with soda hose,I find it more durable. Just my 2cents Riv
