I think you'll have no problems camping at all - there's a shitload of government land out there that no one watches or patrols. If it's dry, you won't want to be starting a fire though as that will attract all sorts of unwanted attention. So have dry food that requires no fire to make. Just pull off the road and find some secluded spot and you should be good to go.\ Lots of Indian Nation lands as well - probably don't wanna camp on any of that as they're very protective of their lands. Two weeks is plenty. We did Indy to Colorado to Glacier to Santa Fe, New Mexico and back to Indy in 14 days 3 years ago. Had a few long days in there, but I don't remember any of it sucking too badly.