Most would say 6" clear is the minimum bedrail clearance. Most would also say 4-5" nose high is too much. Given the choice between the two, I would go with the bedrail clearance and stay nose high. Are trailer springs on top of or mounted under the axle ? Jacking the trailer up would get you both the clearance and less nose high.
2017 Chevy HD 3500 Dually LTZ D/A combo crew cab / Bilstein 4600's / Ride Rite air bags w remote / 50 gal transfer flow Aux tank / Trailersaver BD5
2020 Arctic Fox 32-5m with most options + 17.5 wheel & tire combo