Personally, I wouldnt be worried at all.

There are many a story on here where they have measured "big babies" and induced early only to have bub pop out at 5-6 lbs. And even if they are 9-10 you can still do it! My mum pushed out a 12 pounder without a tear!

Check this out - Small Pelvis? Here?s The Truth About Cephalopelvic Disproportion (CPD) - should help highlight that even if it is a bigger than average baby, its not more than you can handle! Believe that, your body does!