fancyfeet,
With your current iron setup you will never be able to stop the ball. From what I've seen playing with people that have lower-end irons [no offense], you need to hit the ball roughly 10 yards (depends on wind) in front of the green and about 7 yards to the right of the pin. Doing this can result in the ball barely getting over the hill and rolling over to the left near the pin.
If you're long using that method, it will be a 10-20' putt that breaks left to right, easy two putt.
If you're short using that method, the chip will roll right to left leaving you below the hole for an easy uphill tow putt.
Jim's advice is also extremely solid, listen up and good luck!