I won't worry...
Besides if you are into guys, both the anatomy of you and a male partner will take off another 1 1/2 to 2 inches due to the both legs and buttock and how fat both of you are. You would have to perform a very tight contact for a male to go the full depth. So if you measure straight from the labia, you will know the practical depth. That said, I've heard that 4 inches is enough to have sex with most guys. One sex worker I heard, had 4 inches, and never had any problems with her clients. And from what I recall, guys rarely want to go deep. It seems that rapid in/out seems to satisfy them more, which you can't do with huge depth.