I do radicals first. Then Kanji. those I mostly do all at once, although if I feel I have too many I might split Kanji. When all the radicals are guru and the kanji are mostly guru with the stragglers apprentice 4, Then I do 10-15 vocab at a time, once or twice in a day (depending on how simple the first batch was) and I skip a day (of lessons, not reviews) when I feel I am having trouble with the ones I already have or if I have more than usual reviews that day and don’t feel like adding more to it.
I finish ALL vocab from the level before before starting the next level’s radicals, however long that takes me. (I have been on level 3 for nearly 5 days, and just did the radicals for level 3 a few min ago). That does include any vocab from the new level that unlocks before doing the radicals too, cuz I can’t be bothered to figure out how to exclude them from the lessons lol.
So far this has kept me on a reasonable number of reviews at a time and rarely any annoying dead spots (where I want to work on reviews but have none for most of the day). Im sure it will get more difficult to balance as I progress and have stuff I guru2’d or mastered coming at me every day too, but for now waiting till most stuff is guru or about to hit guru before adding more is keeping things under control.