Like you, OH went in for two weeks respite. I got ill and extended another week. Then he got infection, extended another two weeks. Then I just made it permanent. I thought in the early days I could bring him home, though he had fallen twice a few days before he went for respite, and I can't lift him ( have a few health problems of my own ). Then yesterday, seeing him trying to walk. Listening to him forgetting words, not finishing sentences, having to guess at what he was trying to say. He's hardly eating, though I can always get him to eat something. So the answer is no, I can't manage him. He's safe. There are always at least two people there.
I realise money is a problem, it is for me. I am hoping for at least nursing care, which would help. Otherwise self funding.
I realise your OH isn't as bad, and you are sensible and can risk assess. The answer, in my case, is no, he stays there.
How will he feel if you bring him home and then he has to go back?
But good luck whatever you decide.