Hitch Height on OVR 2xx Series TTs with Off-Road x4 Susp Pkg

I have a ORV 240RBS. The measurement to the top of the couple is 30". My TV is a Chevy 1500hd. I put a 6" rise on the shank to set up my hitch to 1" or so short of level.
From the brochure online, the x4 suspension add another 2" to the overall TT height. IMHO, those TT you're looking at would need a shank with 8" rise if your receiver height is only 24". Just be careful when opening the tailgate with the hitch on or you might put a dent on it.