Why not? the quality of Breaking Bad and all the previous seasons of BCS prove that they know what they're doing.
True, anyone can "fail", and I've always liked Ozark and was dead sure they would have ended greatly but the finale left me underwhelmed, but I just trust these writers and I know that everything will have a pay off.
Anyway, I think that whatever will happen in the next episode, it will be the downfall of Kim. And possibily of Howard.
I don't think Lalo will have any lasting damage from being hurt in the rib, but maybe that's how Gus will get the best of him? he's injured enough (or better, he ignores enough the conseguenques of being hurt) and he will make a fatal mistake when confronting Gus or Mike in the lab? (this of course assuming that Lalo will find the lab, but come on, we've been seen Gus planting a gun in it, he will get the info from the german guy, and Lalo needs proof to bring to the Salamanca clan... he will find the lab but won't make it out alive, so everyone will continue to believe he's dead, and the only one who knows the truth can't speak anymore)