Always hard to give answers to these types of inquiries, without hurting someone's feelings. Aw, to heck with it- here goes!
I guess I'm a semi-traditionalist(?). I don't
personally care for Picatinny type rails on things unless it's a modern style firearm, like an AR.
You said you're not much of a hunter, and plan to use it "sparingly." That's good info, but please tell us more about your intended use.
How about:
-using it hunting, or as a "range toy?"
-likely quarry, if hunting? (I'd assume whitetail deer?)
-what kind of weather conditions?
-dawn/dusk, or more like the middle of the day?
-in a stand, "posting" for deer drives, or still-hunting?
-what distance might your shots be?
-will your quarry be standing/walking, or more likely to be running?
For still hunting and/or expected shots at short ranges, the factory iron sights might be just fine. They're "clean," and they're paid for!
For a little longer shot, consider something like an aperture or "peep" sight. Also "clean," but they tend to offer a more precise sight picture often resulting in better "accuracy." Maybe something like this one, from Skinner:
https://skinnersights.com/collections/ruger/products/skinner-860-sight
A low-powered scope like 1-4X or 1.5-5X, might be a good choice. Looks good, dial it down for most use, but crank it up, if a 100-yard shot presents itself. Magnification of 4X should be fine, out to 100 yards. "People" (including me!) tend to "over-scope" things.
Varoius versions of electronic sights (EOTECH, Aimpoint, UltraDot, Burris Fastfire, etc.) might be very practical, but I'm just "not there yet," for hunting. I use them at the range for fun, I use them at work for business… but somehow they just don't translate well to hunting…
for me (only).
Whatever you choose, I'd advocate for something low and/or compact. A monster-sized electronic sight (or 4-16 x 50mm scope) would ruin the lines of that rifle, IMHO. Something up to a 2-7 x 33mm might look OK, but no need to look cartoonish!
My personal choice would be an aperture sight or about a 1-4X type scope, mounted as low as possible.
Take that Picatinny rail off and sell it to somebody else, who really "needs" it. Just don't tell your buddy!

