Good luck with the new rig.
Keep a close eye of tongue weight . Limitations of a 150 HD tow package is rear axle weight limited not so much the towing capacity . Tongue weight of TT plus your stuff in the trucks bed . Try to pack the bed with weight in front of the rear axle and watch what you load under the TT island bed storage area. Tongue weight can creep up. Make sure you have enough spring bar on that WD hitch. You could be up there at capacity, get a Sherline TW scale or use the bathroom scale method, google it .