I run my hydraulic drive off the remote handle closest to seat on the 5088, motor remote is the furthest one. Reason is if I run hydraulic drive off motor remote, none of the other remotes work, can't lift planter. Return goes to the motor return on lower right side.
Have said that, I have no clue how the turbo till system works, and if it needs constant flow, or just constant pressure. If just constant pressure, I'd think motor circuit would work, because the excess flow would go to other remotes. I dont think you'll want to hook to motor return because how will you lift the wings.