So, I got the valve job. The truck now runs great and there is:
No more rough idle. Now, when engine is warm, TB idles at 600RPM all the time, no more bouncing around or stall.
No more cruise control problem. It would fail intermittently by refusing to turn on. After restart CC was okay for a couple of days, then refuse to turn on. Restart, OK, then fail again. Very annoying. Also, it was choppy when going downhill with CC on. After valve job, it is just like new.
MPGs have soared. The best I would get on highway was about 17 MPG. Now, I'm getting over 23 Highway and over 14 city. I LOVE IT!
So I'm glad I went for the money and thanks to everyone whose advice was helpful. I really appreciate it.