Michael does see the problem, and he is more conversant with what is needed to stay safe on the road in the US, than you are. Living in the US he is only too aware of the thousands killed on the road each month, and is warning you. Fatigue is one of the killers, and the only way to avoid fatigue is to get a good night's sleep, every night.
Where are you flying in from. It is only when you get to the US and begin to see the distances to cover and just how tiring that can be that you will realise the importance of Michael's concerns. Mine too! If you do not get a GOOD night's restful sleep, then you end up becoming a danger on the road. It could turn a trip into a nightmare.
Bring warm clothes and rethink your plans. Either bring enough money for budget hotels or to buy a tent and some semi good (warm) sleeping bags and mats.
Lifey