Can't tell you the unit, OPSEC Bro
(Public forums and such) You would actually need the Monroe 58643 rear overload shocks as they are longer and thus would give you the rear travel that would match the lift from the rear springs. That part number is actually for an F-150, so they are a little stiffer than the 58646 stock replacement LL's on the WK. I have ran both sets and found the shock valveing and the nature of the progressive overload spring on the units match the WK factory springs well. I have not ran them with any other spring so maybe someone who has can chime in. As for the OME shocks, their shock valveing is supposed to be matched to their respective springs (front, rear, etc.), and they are supposed to have the matched travel for the springs also. Back to the 58643's, you will need to get some Zinc plated washers in 1/4" and 1/2" sizes for the upper eyelet shock mount on them, as it is a little narrower than the factory or the 58646. I also showed that in the thread.
First order of business is to fix the side to side lean you have going on. The factory springs have different "rates" at all four corners. This is especially important on the drivers side, as the front and rear spring have more "rate" than their respective passenger side springs. Reason? So they can compensate for the battery in the front, and the fuel tank/fuel in back. OME should have listed in the instructions which spring goes where and the springs themselves should have been marked. If not, then we should do a "head shed" and figure out which ones go where, otherwise you will always have the lean and/or you will be doing some odd shimming here and there to try to even it out. The best place for coils I have seen is here:
Murchison Products AEV QLD Distributor | Jeep aftermarket parts & conversion specialists - Brisbane, Australia
The guy that makes the springs is Stu, I think(?). But anyways they make the springs to order. Meaning you tell them your use, and what gear you are packing and they make the springs for a two inch lift or so, but with the right spring rates so the WK does not have any side to side lean. They are in Australia though, so I do not know who imports them. At least it may be worth a look and a phone call to inquire.
If you do decide to just shim for now, put the extra isolators on the top of the rear spring, not the bottom. People in the past have had bottom mounted spacers (poly/rubber) and such eventually split.
Just ask if any more questions, I'll try to help as best I can