I have joined "that club."

4 bills for the AR is a good deal. Palmettos are a solid entry level rifle, I've had a few of them and never had an issue. Looks like you either need a scope or some iron sights on it.
I already have an inexpensive scope mounted. Whatever I use, it needs to have eye correction/ focus (like a scope). Only way I could use iron sights anymore is to learn to shoot left handed.