David if you get the Badger Half cab you dont need the rear cage, unless you are carring people back there.
Badger has a great product you will be happy with anything you get from them.
I think they will be coming out with a half cab set up without the need for a gutter kit which will cut the all in price by approximatley $500
I have the drop curtain, surrey and tonneau and they look and work great.
I put the on the drop curtain, surrey and tonneau and Im 90% weather tight.