Not sure why a rifle unless your stymied with just an FID. Just my thoughts but I'd rather a decent handgun over a rifle or shotgun for your requirements unless you have a wide open floor plan. I'm not sure why you would need distance in outside use either if your in a defensive posture. I'm sure everyone here would love a quad 50 as a just in case, just as easy to clear most normal houses as with an SKS. Try turning a corner holding a broom stick to see what I mean.
Also, you can't just plug someone for boosting a tv or giving you the stink eye, not in this state anyway. As for capping the guy walking down the street taking pop shots at houses, I'm pretty sure by the time it's all over with, you probably wish you didn't. It's called a basement. Sad but true.
Your also a bit short on coin to get something worth having. Prior to all the panic buying, sure, not now. Ak's could be had with 2 30 round mags, sling, oiler and so on for about $250.00, now they go 5-6 for the same one and that's now that the buying spree has waned. Christ, WASR's were well over a thousand at the height.
There are a lot of good handguns that can be had in your price point, esp in the used department. One case would be a RIA 1911. I don't have one but I've shot them. Good pistol for the money. There are also a lot of 9mm in the plastic fantastic models that are good buys for your needs.
Whatever you choose, make sure it fits. Half the battle of proficiency is comfort and fit. In my case, I prefer the grip angle, heft and ergonomics of a 1911 over a Glocks. Nothing wrong with a Glock, just personal preference. You'll also want to practice. Lots and lots of it so it becomes an extension of yourself. And finally, it has to be reliable. Use what it was designed for with ammunition selections. Again using the 1911 or my PPK/S or any of my other autos so as I'm not pushing a 1911 on you, I use just FMJ's. Opposite in my revolvers as I use only hollow points. If you really want to ruin someones day, try a wad cutter.
Anyway, just my 2 cents.