Buying used RV as foreigner getting insured

Hello everybody,

I am an Dutch citizen and would like to buy a used RV from Cruise America. I want to register it in Montana via an to be established LLC.

My goal is to travel through the USA without any restrictions concerning garaging. I know I can get an insurance in a state, for instance Arizona, but only when I garage the RV in Arizona when I am not using the RV. The consequence of this is that I can  not travel wherever I want to,  because of the distances in the USA and have to come back to Arizona. 

So I am looking for an insurance that does not have the garaging restrictions to enable me to have really free holidays.

Please find my an insurance company that enables me to travel  freely through the USA.