Lol, you forgot beer and toilet paper on your list. And better not have a fat fishin buddy. Only allowed 200 lb there.....
Since you don't really want advice, the only real question you asked was about a slippery boat ramp and front axle weight.
The truck, camper, front axle, boat and ramp won't care or know the difference whether you have a diesel or gasser under the hood. If the ramp is iced up, everything will end up in the water. If it's not, it will be fine.
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5โ turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold