OP, I have a Norc just like yours. I've made exactly 3 mods to it, none of which are essential.
1) ACT trigger - much more crisp than the stock Norc trigger - and it drops in. No gunsmithing required.
2) a BAD lever to make it truly ambidextrous
3) a small piece of rubber (can't remember the name off the top of my head) that covers the gap between the trigger guard and the pistol grip so your middle finger doesn't get chewed to bits during long range sessions....
I'm using a VISM 1x4 scope with an illuminated Mil-Dot reticle on a Burris PEPR mount (both Chinese-made : appropriate, no??

) for optics and the carry handle sights for irons. I DID have to raise the front post to zero the irons to 50 yards, though (my scope is zeroed for 100).
It's a great, reliable, inexpensive platform to get into the AR game. If you decide to stay with AR's, you can sell it for about what you paid, OR keep it as a backup/main rifle for CQB-3Gun. I'm planning (next year) to build a 20" bbl version with a 1/8 twist and a match trigger for Service Rifle shoots - although the Norc works just fine for that at my range (limited to 100 yds right now).