yes sir, MOS version
No. Regardless of window size, you will want to practice your draw enough that finding the center of the dot becomes muscle memory. If you are having to always stop and fish for the dot, then its doing more harm than good. I have Holosun in both the C and K series footprints, and don't find the K series all that much more difficult despite the size difference. If this were a competition optic, then you'd want something bigger than both of those anyways.
Do you have anyone who will let you try any red dot optic nearby? The only thing I caution is that if you have astigmatism (which many people do but don't realize that), the starbust/blurry dot effect usually becomes more pronounced at higher brightness levels. A common complaint I see for the SCS is that it may be too bright for some, and that could make it borderline unusable for someone with astigmatism. If that's not a consideration, then you're in good shape.
I DO have an astigmatism but I'm getting ready to head to the Dr to get it checked out. I've got a Sig Romeo that I'm bringing in to the appointment 🤣. And I was going to go with green since that seems to help some people with it
