I've not heard of that brand of tires, but the tread pattern looks very similar to the
Nitto Ridge Grapplers that I'm running on my SRW. I'm very happy with these tires and will probably buy again.
Don't just go by "Load Range F"...you need to look up the actual load rating for the size you are interested in. If you look at the specs on any tire that comes in multiple sizes, you will note that load rating varies by size even when all tires are catty the same letter rating.
Here is the spec chart for the Ridge Grappler in various sizes, note that some the E-rated sizes have higher load ratings than the one size that is F-rated.
The right way to do this is load the camper up and head to a scale. Find out how much you're carrying on the rear axle and size your tires accordingly...