I positioned mine at just about the same place. It was the most comfortable for me, which at the end of the day is really what it's all about. :)
I liked the AFG so much, that I actually replaced the vertical grip on all of my rifles with them.
I really couldn't find a difference, nor could I justify the increased cost. It's just a magnifier, so actual optic quality wasn't all that important to me.
I sent mine out three weeks ago, and I'm still not even coming up on their site. It says to wait at least six weeks, but it seems odd that it would take that long to even get in their system.
I find it very hard to believe that you can't find a sturdy but inexpensive bipod for a .22 rifle. The bipod that I had around the house was $20 on Amazon and it's fine, just not tall enough. I can't imagine spending 1/4 of what I paid for the entire rifle on a bipod.