Honestly, your best bet may be just to camp and stay with friends along the way. Camping is easy as long as the weather is nice and should be in the summer if you go then. I'm not sure about fall it may snow out west. In the spring its rainy. Also camping is easy to plan for or just find a stop its easy if your traveling and have a nice detailed map. It can range from 10-20$ a night camping. A motel worth staying at would run at least 40$.