Finally decided on Ground Tent vs RTT; ended up deciding that a ground tent would work better for our family so after a bit of research ordered up a Gazelle T4.
With that settled, it was time to figure out what to put on top of the RCI Rack. I decided to go with the Yakima LocknLoad platform setup since I wanted to run a setup that didn't add to the height of the truck when it was unloaded.
After measuring the rack I had and the space from the cab to the end of the bed I ended up going with the "B" size; 60"x54". The other available sizes were either too long or too wide.
The downside which I didn't realize until after assembling the platform and trying to mount it was the spacing between the crossbars of the RCI wouldn't let me run the platform centered over the rack. After thinking about it for a little bit I decided to turn the platform 90 degrees to utilize the RCI crossbars that run from front to back (good thing I ordered the extra top crossbar with the rack). This orientates the slats front to back on the platform which shouldn't be a problem since thats the way Rhinorack orientates their Pioneer platforms.
One other problem I had with the platform was that one of the mounting brackets came with a missing nut insert. After contacting them it looks like it'll be at least a couple of weeks before they can even check to see if they have an extra one at the warehouse (they're all working remote). I hope they do since I have a feeling if they don't it'll be months before I can get a replacement part; which obviously sucks after spending a bunch of money on this setup.
In the meantime I was able to go ahead and utilize the busted part as a stopgap until I get the new part.
Here are the pics: