As you have no doubt already noticed, you are not likely to find many fans of the Hi-Point pistols in this forum. I am no different. Now, to be fair, I have never fired any of their guns. This is because, after handling them (I'm talking about just their pistols here), I have had no desire. They are of cheap manufacture, and balance poorly in my hand. That enormous brick of a slide wallowing around can't be an aid to quick follow-up shots, either. I may be wrong about them but my preliminary assessments seem to be backed up by most who have experience with them. You're better off with a good used gun rather than a bad new one.
As for the carbine, I have no personal experience with it either. Since it seems to be getting a surprising amount of positive feedback, I've not written it off entirely. I wonder, though, if a 10/22 wouldn't be more plinking fun for less money (especially considering the cheaper ammo). And if an SKS wouldn't prove a more reliable weapon for more serious purposes (or more serious plinking), for roughly the same price in standard trim; just a little more if you swap out the original stock for a pistol-grip style.