Getting a Niigata would be hard, since it only achieved IOC & was formally deployed in 2004. You'd be more likely to get an F-4, or an F-16, or perhaps a MiG-29 - one of the more cheaper 2nd Gen TSFs - than a brand spanking new XFJ-01.
That said, A-10s shouldn't be too hard; the A model is hanging around, and IIRC they make the C model for the mideast. The US is maintaining A-10s but isn't getting any more of them.
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