The reason that the price is low is because that is one of the smaller units on the property and it is closer to the road than to the cliff side. But with that said, in my opinion there isn't a bad room on the property, some just have better views or perks than others.
But the real sell of Catcha is how gorgeous the place is, how amazing the staff is, how wonderful the food and drinks are, etc. so if they would let me put a tent on the property I would do it and not even complain (and that is coming from someone who doesn't camp!) LOL
You will be happy there for sure and the Rockhouse is also a gorgeous property with great views food and drinks too, I just prefer Catcha for the vibe and the staff and overall experience.

Treasure Beach is great too, you have to check out YS Falls and the Pelican Bar!
You have made some really great choices for your first visit, you will have a great time.

I myself am not familiar with Joe Cool as I always use my own favorite driver (Chicken) but I think others on this board have used Joe Cool and have said good things, so I will let them speak on that but yes, your idea of using one driver for everything is a great idea!
You sound like a pro already!

Have a great time!