Let's look at the specifics...
Penn Plat oil, 5w-30 - This can easily go 10,000 miles in a non-turbo (as a rule, there are of course exceptions)
Non-turbo engine
2500 mile road trip over a week.. no towing, at least half highway, and the rest country roads.. this should be easy on the oil and engine.
In my mind, you've got plenty of life left on that oil, and the trip is not going to tax it, so I'd keep it in. Even at the end of that trip, you'll still be only around 7,500 miles, which to me is a good target. 7,500 miles also happens to be my standard target OCI, and I drive in what is typically considered a 'severe duty' environment.
Leave it in.