We have installed intellislope on one very similar.  The one we did had an extra hydraulic circuit that we used, locked it in constant flow, and used open center (if I remember right) soil max valve.  We teed into the lift cylinders coming out of the valve.  We didn't have a boot attachment like that, so we had to make a contraption to keep the receiver the same height above the digging point, through the full stroke of up/down.  We run the intellislope in non-pitch mode.  It works well, but there is a lot of vibration.  Feel free to email, I have some pictures and notes from the install if you are interested.

We ran on RTK as well...not possible to tie in a laser to the Intellislope system as someone else mentioned above.