You don't mention a conversion van, which would be a very good choice for living in for 45 days, and maybe future trips as well. Mine is in storage for at least six months every year, sometimes longer.

You might be interest6ed in checking out this thread. I have now made three six month long trips in it, and it has become a very comfortable little home on wheels. Spending most of my nights at truck stops, BLM campsites or similar **free** overnight stops has saved me a fortune.

Of course, nothing is **free**. It is courtesy to give the owner of where you are staying, and whose facilities you are using, your business. Eat in their restaurant, fill your tank or similar.

Ventilation has never been a problem for me. I have never seen any condensation. Cars are not airtight. On top of that, I leave the windows which have insect screens open all night, and have small battery operated fans sitting in front of them. On very hot nights I run the engine and A/C for 15 mins before retiring.

Lifey