Since the Fed has already signaled a cut

I would suspect current rate quotes have already factored that in.

But, if I do my economist thing and say it all depends on what you assume

-given that the rate cut is probably only going to be 1/4%, I not so sure it would affect the rate for student loans all that much. There isn't always an immediate cause/effect for very small Fed rate cuts for all matters of loans especially considering that rates in general are already pretty low.

- if the Fed decides not to cut rates after all

-a large event (significant earthquake in CA., further issues with Iran etc) could actually cause rates to go up.

In short, if you think it is a good rate, I'd go with it.