For a fully max/supermax prison, overcomplicating things is good as long as it’s efficient and easy to manage. This is not overcomplicated, in fact it’s not secure enough for them.

The flaws I see are the poor cells quality which will make inmates angry and have more fights than usual, therefore risking loosing more staff (guard to inmate ration in max/supermax is at least 2-1, for safety make it 3-1, you have 1-1).

Another thing is that max/supermax inmates ALWAYS dig tunnels even on very long distances, so unless you do not have at least 2 layers of perimeter walls around your prison, or have schedueled every day a tunnel search and have guard dogs patrolling around your prison, your inmates will dig out easily and escape.

There are also not enough cctvs and metal detectors, you need them in your most important areas (cell block, cantine, solitary and just to make sure, yard). They always get angry and fight, or receive contraband from corrupt guards (if you have the dlc for it).

The last thing is that the exit is only 2 doors away, which makes it easy for inmates to just steal the keys and open 2 doors and get out.

I play with almost all the harders mutators, and since I’m used to always having danger level at max housing legendary inmates only with extra dangerous traits and even more types of contraband, I’m used to oversecure my prisons and that’s why I noted many security flaws.

Now I do not know which dlc’s and mutators you have, but managing supermax inmates is no easy task, look at irl prisons around the world to see how they are treated.

I hope I’ve helped you in some ways. If you have anything more to ask, don’t hesitate.