The much in advance rub was not intended, they were prepared on Saturday evening, and should have gone on Sunday morning, but since their cooking scheme didn't fit with my ribs, which were needed Sunday noon, and weather not playing along yesterday afternoon, I had to delay them till today.
I don't even really know why I sticked to the idea with the casserole after the plan with ribs + chicken legs was abandoned, which I thought was a good idea when putting the ribs on the lower grate and the casseroled chicken legs on the upper grate to not getting chicken juice onto the ribs.
Brining is already noted, and I will look into that (since I have never brined before).
I don't want to give up the idea of poultry in my WSM, I only need to convince the wife that it still is a good idea and usually should work out just fine.
WSM 22.5" + Maverick ET732 + SuperFast WHITE Thermapen + Pure Natural Lemon Tree Lump Charcoal