40 ft 5th wheels and campgrounds (FL to AK)

I plan to drive my 40 ft. Elk Ridge 5th wheel from Florida to Alaska. How difficult will it be to find campgrounds that can accommodate my 5th wheel along the way and especially as we get closer to Alaska?

just asked for a pull thru and in Woodall's they list big rig friendly as a park guide. Good luck see ya in Alaska.