It looks like you guys are gonna have ample time to decide what to do, the F35 production is shifting ever more backwards;
NHK WORLD English
The latest report by the US Defense Department says that full-rate production of F-35 fighter jets will not start until 2019, 2 years later than planned.
The production delay may have an impact on Japan's plan to purchase the fighter jets.
Also a a top Pentagon official said on Friday, noting that software failures could "bring us to our knees."
Production shift to a later date is now sold as being a good thing according to
Air Force Major General John Thompson.
Pentagon focused on resolving F-35 software issues | Reuters
All is well in JSF land it seems.