Ended up doing a self mod for free which involves stuffing the seat with foam through a hole under the seat.
After the forward slope is fixed, put on the better Airhawk and never looked back. Most comfortable seat I've ever had! Easy to change out too!
Take it off if you sell your bike or put it on a different bike to ride! Awesome!
I would say total gain about 2 inches. I'm about your height.