One thing to consider is the PSI allowed for your rim. On our White Hawks the Sendel wheel shows max PSI of 60 per the manufacturer. Given that a LRD tire has a max of 65 PSI, you have to take that into consideration.
I'm currently on the fence of whether to go 8-ply and take the risk with increased PSI, or just go the standard 6-ply route with the LRC.
2017 RAM 3500 SRW Laramie Crew Cab Long Bed w/6.7 CTD & Aisin
2015 Eagle 284BHBE Premier