OP, I would suggest cutting your map in half. Sure you could easily cover the US in 3 months but there are a lot of boring miles on you map that could be better spent really seeing this great country. Also you have a bunch of fairly large cities that you are passing through. Unless you plan to stay in those cities, best to find a to avoid them or your 100/day budget will start to shrivel. Nothing wrong with cities but riding through them is not the most fun. Certainly depends on what experience you want from the trip.