I think row c in the circle would be good ...we were recently and has grand circle row E and they were great seats....we were right in the middle...think it was seat number 19/20....try to get in the middle if you can.
Have been in the stalls before and did not like them....not a great view and very cramped. They are not on an incline so it can be hard to see if you are small or have a big head infront of you .....
Not sure where row q is