You don't mention what you're looking at for a TV, Long or Short Box, Can make a difference on hitch preference. Because of the weight I hope you're looking at Duallies, which would only get you a long box so there would be no need for a slider. But I would say go bigger than you need, at least a 20K as that 16K loaded can easily turn into 17K, don't ask how I know.
2018 Chevy K3500HD High Country, Crew cab, DRW, D/A pulling a 2016 Redwood RW39MB, full body paint, dual ACs, dual awnings, Residential fridge, fireplace, sleep number bed, auto leveling, auto sat dish, stacked w/d, disk brakes, 17.5" "H" tires, MORryde IS and pin box, Comfort Ride Hitch, Onan 5.5K Genny.
Michelle & Ann S.