2.5" bypasses and 2.0" coil carriers.
Why would you have bypasses designed to do 80% of the work smaller than the shock doing 20% of the work?
If you really do plan on bypasses then make sure you design the suspension so you can use all of the zones of valving or you're wasting their perks. 8-10" of bump travel and 6-8" of droop from ride height. Without links on the control arms, I'd use a 16" travel shock.