About the only thing I could think that might cause a problem is Altitude. Not sure of your O2 needs (Flow rate, etc), but If you are planning on camping at sites that are higher in altitude I would talk to your Doc. Camping at higher elevations can and do put additional stress factors on your body. Better to be safe than sorry.
Big Lake in the Apache-Sitgreaves National Forest in Arizona is at 9,000 above sea level. I'm in decent health, and going there lets me know real quick that the air is a bit thinner than down in Phoenix.
But as long as the Doc says you are good to go, get your backside out there and enjoy life!