It is common practice to mount the air tank, as well as the servo/valve in the fuselage and use quick-connects between the wing and fuselage.

If you have a retractable tailwheel, you'll need to have lines between the fuse and wing either way you approach the problem.

I usually put the air tank, valve/servo, the schrader fill valve, and retract-tail plumbing in the fuselage.
I then have two hoses that exit the fuse going to the wing via qd's........