CA, I moved up about 6 years ago. I bought a river Jon about 4 years ago. It is very difficult to solo fish Norfork on two full ~ 6000 CFS.
It is much more manageable for me at 3000 CFS. What I really wish for is about 1000 CFS, but they almost never do that. There might be a practical reason why they tend to run 6000 rather than a better number for fishing, but I don't know it.
Take your time and learn the river and what you are comfortable with.
You do really need to be paying FULL attention on the Norfork when it is running full.
I always worry a little about the water falling out, but you'll see it dropping and you can almost always get your boat downstream, but working it upstream on no water can be very difficult.
Going out with a guide is not a bad idea. Just talk to them before hand and explain what you are interested in doing and learning. Ie hire a bait guide if that is your thing or a fly fishing guide if that is what you want to learn.
Here's a couple of basics 1) Use a drag chain NOT an anchor. Never anchor off the stern and never anchor in current. I only use an anchor to hold my boat on shore. 2) Check the water level and the projected generation before you get on the water. If you are downstream that = no surprises.
You going to have a great time learning the river and you're going to learn how to catch more and bigger trout.