skill carries you a long way. I'm locked on 35"s, and I'm really happy with how my truck preforms. I'll do a SA eventually, but that isn't a top priority. You'll actually develop a lot of skills with IFS, it forces you to be more technical, and choose your routes more carefully. In the long run, I think it can make you a better wheeler.
My Supervisor and his assistant were arguing over that same subject the other day.
Is your rig locked front and rear?