So, I've read what feels like a gazillion threads and from my understanding, there's not a single direction for this type of crossover like the Ashton manual. I think you'll probably feel uncomfortable for a while because the Clonazepam is still building up. I'm tempted to suggest to do the crossover also in one week intervals as per the Ashton manual's suggestion for Valium to give you enough time to adjust. My cautious side says rather do this slowly than rush the process.
I see some people who have made this crossover, split their K doses even more to compensate for withdrawal during this process, but you are on such a low dose, I'm not sure if splitting this low dose out over multiple times per day would have the desired effect. That would probably also mean you first need to split your Lorazepam doses and stabilize on those doses first. (I'm just sharing with you what I've read).
It seems to me your suggestion for managing the crossover is the best for your circumstances. What do you feel is the best way forward?