If you don't need a lot of drawbar hp you could use an open center PTO pump thru a flow divider like I posted and "get-r-done”, this very simple to do. I have taken the remote and plumbed thru the pump to supply oil to the pump eliminating the need for a reservoir tank. It work best if you got a little open center tractor that doesn’t have enough capacity to supply what you need. It uses the oil coolers on the tractor to keep the oil cool. The remotes have no load other than moving the oil around and keeping the PTO pump supplied.

If you wanted to get real simple and just have a pump for each functon this Hub City gearbox would allow you to stack 2 open center pumps from your PTO and do what ever you needed to do with out any flow dividers or power beoynd. Just plumb the remote supply into the suction side and return to tractor from the return to the pump body. They make a 3 psi inline check valve that you'd need to put in between the 2 ports on  the suction side. This would solve your problem and could be used with any tractor you have then.