I think Whazoo has a 6″ lift, which doesn’t look or operate too badly since Chevy has the lowest bed height to start with. The thing I would worry about is; what kind of lift is it? If it’s a cheapy lift without longer arms, the downward flex is at a minimium. I’ll have to agree that a pop up is probably the wisest answer for you.
2020 Ford F-350 XLT FX4 4WD SRW SB SC 7.3L Godzilla Gas TorqShift 10R140 397 amps dual Alt dual batts Frnt Dana 60; Rr Dana M275 E-locker 4.30's 4580/4320/4066# payload 7243# curb wt. 11,300# GVWR 5-er prepped. 2020 Northstar Laredo SC, 12v compressor fridge, cassette, 320w Solar sub zero insulation.