I will second the comments of if you are relying on hospitality of others you are in for a rough trip. Bring what you need to be self sufficient and you will have a much happier tour. I have read countless touring journals where people with full on touring rigs had many many offers to come stay with them and were offered meals, if you look like just another cyclist out for a training ride it is less likely the question of "where are you headed" will not come up as often.

Also why such an expensive bike if your budget is that tight? You can get a very nice bike for $1000 or less and then put the rest of that money towards gear/food to take care of yourself.