How to best plumb for a loader grab on a JD4720

[Tractorby]

Hi,
I have a late model cabbed John Deere 4720 2018. It already has 3 services fitted to the rear and it was recently fitted with a 440R loader with joystick. I would now like to fit a grab on the loader but am not sure what bits I need and wondered if anyone could help.

I've attached a few pics of the lines as they are now.

 

[Tractorby]

I found this kit JDLVB26033 that I think mounts on the back of the loader but it's not clear where where it attaches and if I need anything else. (Different lines for the FEL tilt function?) It also seems to come with a new joystick, although I already have this. (Though I haven't had a chance to trace the switch wiring yet to see if it's been wired to a different valve so maybe I should just get the whole loom?)
Is it possible to buy the hard lines and block separately and is there anything else I can't see on this drawing that I would need?