since he hasn't really mastered it yet, I would stay on the stage 1's for now.
I didn't really use the jarred babyfood (as I made my own) except for when we went out, I think I moved on to the stage 2 when they seemed to need "more"
Mason was on table food at 8 months and Mikayla at 9, but that was them. Dean is a different baby, and he may need more time.
I used this as a guide when introducing solids
http://www.wholesomebabyfood.com/solids.htm
I printed it out and stuck it on my cabinet