My Two Cents:
1. Consider putting the fan in the kitchen area. We put a MaxAir Turbo fan with a thermostat because a) we like to camp on the beach and don't want to run the AC constantly (the fan can pull in cool air or exhaust hot air automatically) and b) it blows out the cooking fumes and heat build up from the stove.
2. WRT the 100 mile dealer issue, it will only be a problem during the first year when the warranties are in effect, but that will only concern the RV systems--the local Chevy truck dealer can service the vehicle. Subsequently, any repairs or additions can be accomplished by a nearby RV dealer.
http://www.campingworld.com/browse/skus/index.cfm?deptID=&subOf=74&skunum=13516