One of the things I did when i drove was not use the cab/sleeper curtain but made a curtain that went around the side windows and the windshield it gave the feeling of more room, also dont know about the white noise machine (couldnt sleep without the engine running) maybe now days with APU's it would be different. Invest in a good mattress. I drove heavy haul (10 axles) so I spent alot of time on the road had a sat dish and of course the grill I got so sick of truck stop food,