For top and tilt ONLY, there is no need for larger capacity valves or components. Look, there are flow restrictors in the parts list to slow movements down.
Of course, if the parts are undersized, and a DIFFERENT application were wanted, such as a log splitter or hydraulic motor etc. Then full flow would be nice.
I'm adding front and rear "remotes" to an old
B7200 with these things in mind. Flow in, PB, and tank are all 1/2 inch steel tubing.
The spool valves are both plumbed in 3/8ths. I'm seldom in such a hurry I can't wait for the York rake to rise or fall, or the front blade or blower need to lift or drop more quickly.
Now a LOADER ,..... that can always use as much flow as you have available, but I assume that is covered by other hardware.