Can I camp here?

Yes, with a camper or in a tent

The convenience store is El Dorado Outpost. Best place to check in and get supplies, info, camping gear, Jeep trail passes, air for your tires, food, drinks, etc.

Yes you can camp there. They might have a camp fire restriction at times. You can ask the convenience store on the right hand side right before you get there. They should be able to answer

They're are a few campgrounds and you can also backpack camp in parts of Uwharrie.

Yep several campgrounds exist in the forest

Yes, I believe that there are campgrounds available.