You only have the spool in the main valve, everything else needs to be added, 2 reliefs, pilotlines, pilot pedal valve.
Then there's the matter of regulating the max flow because if you push the pedal to the metal so to speak your tilting bucket will move like a fly swatter and that's no good.
The cat way of doing that is having a controller and a bunch of doodads for that but that's expensive so I'd rather do an aftermarket setup with a simple 1 channel pwm controller so you have a thumbwheel in one handle as input and the pwm control regulating the pilot oil to the spool.