When I had a class C, I had a Reflectex-like windshield cover as well as a curtain that attached to the sunvisors and around the cab on the inside and a snooze bonnet on the outside. When it was really cold, we hung a quilt under the bunk down to the floor to keep the cold air from the cab about of the camper. This made it harder to use the cab for storage, so it was not a permanent set up.
Your generator is fed by the chassis gas tank, right? It probably shuts off when the gas tank reaches 1/2 full or some other level. Be mindful of this!
Also, load balancing is important. Pay attention to where the wheels are and where you store heavy stuff. If you load up behind the wheels, you will feel it going down the road. Figure out what you need to take with you and analyze your inside and outside storage options carefully. This always takes reworking after a few trips.
Did you keep the same color scheme as you had with your tailer and does having things match matter to you? This can be expensive! We went from brown to teal to green and mauve to blue to adding a second camper with brown and have accented it with red. You may want to keep your old stuff until you decide what you need and have space for before you go replacing everything with a new, different colored version.
I looked at this floor plan at an RV show last February and really liked it. I hope it works well for you and that you enjoy it.
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1999 American Cruiser Class B
2006 Palomino Puma 27FQ Bunkhouse
2007 Gulfstream Innsbruck 36FRS Park Trailer