Nothing wrong with an RPR. They're reliable, inexpensive and basically Lego. The actions aren't super smooth, but unless you're competing who cares? A good aftermarket barrel will make them shoot with the customs. Put a $750 Krieger prefit from Hirsch on one and go hurt feelings at the range.
Put whatever glass you want on it, it's a rifle you can learn and grow with. Glass can always be swapped to something higher end down the road.
The gen 2 PST 5-25 is decent for the price, but I find the eyebox tight at higher mag. Turrets are decent, the glass is pretty clear until the magnification is cranked, and mine tracks perfectly. You take your chances on lower level Vortex. The ones I've had hold zero but they're on hunting rifles that are never dialed up and down. I have no experience with Athlon, but they seem to get good reviews.
If you can still find them, the Nikon blacks got good reviews for glass and tracking.