Yes, there are several that would fit such a rig. Look at the youtubes that have site photos, many with the rigs in place, so you can judge how they fit on the pads. Example: https://www.youtube.com/watch?v=uQByrZmQ1Hg
In certain sites, I would say so. I think max vehicle length for each site is listed on the page at recreation.gov. I know I've seen some long RVs there in the past.
This shouldn't be a problem. Clearly there are sites that are better suited for larger RV's than others. Suggest you call them and confirm which ones would be best for your rig. Great campground; you will love it.