There is a place based out of Colorado that does custom installations. I cannot remember the name but came across it when buying the components for my own installation.
AMsolar is excellent but they are in Oregon and they have a limited inventory in terms of solar panel types. Theirs are small and great for truck campers but for larger RV's the larger panels like the 140 Watt Kyocera will be less expensive and there will be fewer panels to install and wire.
If you use 34 volt output panels instead of 17 volt you can use much lighter gauge wiring for the runs from the panels to the charge controller and this makes the installation a great deal easier.
Some places to check out are amsolar.com, mrsolar.com, rvsolarectric.com, rvsolarsupply.com
The RV solar will have panels sized for RV's while the majority of solar panels are size for commercial and house installations and not the best for an RV.