driving uphill on gravel driveway

Many driveways, gravel or otherwise, have a transition that your RV may not be able to handle. I have bottomed out only once and felt like a complete idiot when I did. I was lucky enough to be able to work my air bag suspension just enough to back out of a terrible situation but I don't recommend anyone trying to make a shot at it if avoidable.
It sounds like you don't know enough about the situation you are heading into or if you do you have yet to share it with us.