Actually, I suspect that 7k mile OCI is within factory recommendations, right?
You will probably cringe, but even the OCOD would easily suffice in that application. I suspect, being a typical BITOGer, you'll eschew such thoughts.
That in mind, the TG is way more than capable. The FU is a waste in this case. Actually, both are a waste overall, because you'll not run them long enough to glean any discernable difference. They are rated at the exact same efficiency, and neither would be anywhere close to a sense of "full" in terms of loading, so you're going to toss either away long before they are reasonably utilized. In short, using either the TG or FU is a waste. Might as well lessen the fiscal waste by using the TG.