4,660 actual weight on a 8,900 pound GAWR front axle explains it all. And, this is common on those year products because so
I have no idea how technically skilled or motivated you are, but yes it is a lot of work to move the generator, and the logical place is to isolate the forward most section of the basement on the right side of the coach. Access is no different than where it is now.
The other, and easier solution is to go to a scrap metal yard and buy some scrap metal to bolt to the front end.
Your fuel tank is already forward, as is your potable water tank. So house battery bank and inverter, and generator are the two "likely suspects" for moving weight.