IF this graphic is correct then F-35As have 2 Gs to go from 7-9 as they are 3i jets at moment. However the flat deck landers are 'not quite' their full G capacity with 2B at 5.5 G for USMC and USN yet to reach IOC but at 7.5 G - if they are built for it. (see grey shaded area with order of Gs F-35A, B & C.
http://i.imgur.com/a5QL39F.jpg