logans metal fab, who made my front bumper, can make a single tire carrier for about $600.00, and a dual for about $900. I talked to Jamie about it last week actually. (She's super easy to work with.) Comes with grade 8 hardware, too.
one side would be the tire, one side could be one of several things: cooler, storage box, or jerry cans. They said specifically that they wouldn't be able to integrate a jack mount. Not sure why...
I'm very happy with my front bumper from them. Apparently this bumper uses the eight stock bumper mounting points and ties into the hitch mount holes using the stock nutstrips for strength (equaling, what, like 12-16 bolts?). The bumper has an integrated, non-rated hitch. (bumper only is around $300.00 or so, I think. It's plate and very well formed.
I like the simplicity of that kaymar setup, too, though.
regards, Brian
p.s. Here's the link...
http://logansmetals4x4.com/id8.html