I second the request, please take pictures as I am in the same boat running hoses off the rear ports.
What size of line are you using?
The lines from the loader vavle to the 3rd fucntion valve and the line from the 3rd function valve to the rear hydro is 1/2"
Line from the 3rd function valve up the loader to the grapple are 3/8"
Here is the kit:
Started installing it today and have already ran into 2 problems.
1) The bracket with the 3rd function valve on it doesn't seem to be correct, seems it doesn't have enough drop to it causing the 1/2 lines to hit the underbody of the tractor.

You can see there is no way I would have had room to get those lines on if I mounted the valve first. You can see the bracket isn't flush with the rear mounting surface of the tractor.
I put the hoses on the valve first given there isn't much room in there to get a wrench on the hoses once you mount the valve.
2) Not sure how to get the current handle off the control lever for the FEL, seems to be glued on or something, no screw to loosen and I tried just unscrewing the handle thinking it may be threaded. No luck. Anyone know how those handles are mounted on there?
What I thought would be the hardest part, getting the old solid line off and new lines on the loader vavle was actually pretty easy. Here is the 90 degree adapter they give you mounted to the loader valve.
Here is the adapter on the rear hydro unit (this is where the power beyond line went).
I haven't got to the part of running the lines up the loader arms, but may mock that up now and see what I need for that. Right now I am leaning towards running them up the left side just because there doesn't seem like a lot of room left on the right side underneath with the current loader valve and 4 lines running up the FEL.