The invertor can be most helpful while on the road to power your 110 plugins, as well as while you are parked with out the generator.
you may want to rethink the leveling jacks, some of the RV parks are not very level. Be sure to carry enough leveling pads.
I did not see a generator in your list, if not standard, you may want to put a solar panel on the roof to charge batteries.
Marianne & Jerry
2016 Itasca Sunova 35G Honor Guard Fort Snelling Natl Cemetery, USS Decatur DDG-31 71-75