Rear tire carrier bumper mounting system, whats best?

Ok boys and girls, soon ill be fabbing a rear tire carrier bumper for the XJ, it will have a 35" cooper stt with a ravine wheel on it. ive seen a few other peoples tire carriers in person and they dont seem to be 100% 'solid'. I really want this mounting system to hold up and not sag and move around under weight with it opening and closing. basically want this thing to be silent and solid.

I have the swivel hinge and mcmaster latch good to go. but for the bumper mounts, what is the best method for this?
I did some searching and came accross this:
http://www.naxja.org/forum/showthread.php?t=93051&highlight=rear+bumper
and of course Steve F's recent build
http://www.naxja.org/forum/showthread.php?t=899237&highlight=rear+mounts

Are these basically the Best ways to go about this (mount wise)? without going ridiculously overboard otherwise? Thanks guys id appreciate any guidance before i get down to business. lookin to mimic detours slimline design

My C4x4 rear bumper mounts to the stock 4 points on each side, with a tie-in bracket that picks up the rear 1 or 2-most bolts for the hitch. Been very solid going on 10 years now, holding a 31, then 33, currently 35, and soon a 36" spare. It's the one original aftermarket part on my rig that hasn't been changed at least once, haha.

Here's the mounting setup I use on pretty much all of the rear bumpers. Grabs a couple of the factory bumper mounting points on each side along with the under the framerail mount just like a receiver hitch. Nutplates go into the framerail, la dee daa...you get the idea.

awesome thanks for the input guys, definitely a help