Hi @Mac ! that's such a broad question, like asking at a restaurant, what's good?
If you are just starting out, I recommend going to your nearest REI and just wander around and talk to the vests.
Starting out can be sooooooo expensive due to the this equipment intensive activity.
And of course equipment is season dependent and so situational (is that a word?)
There's what you mentioned, plus clothes, cooking stuff, bear protection stuff, navigation stuff, first aid stuff, ...you get the point.
I also recommend you get what you can afford, go out in the spring/summer/fall, then replace as needed.
I've never meet a backpacker who didn't have multiples of EVERYTHING. It's sort of a 'learn as you go' kind of thing.
best of luck