you can't judge that it will take x number of days, as a lot of factors come into play. it might take people a little longer to pay into the coop, (that was for future coops) a coop manager might run into a parts shortage from mouser, sometimes mouser makes mistakes, (wrong part, not enough parts) the coop manager had to sort out the parts, and find the time to ship them. I'm still waiting on a dmx tester from last year's coop. I'm not complaining, just understand that it takes time to run these.
Plus, as more coop managers get involved, there will be small coops run by first timers, and then later bigger ones run by coop managers that are still "rookies" at being a coop manager, so with the ones that they run, there will be a little learning curve.
try to get into the first ones, if you're worried about having the numbers you want, get to the number you want, and then like I do, i back out of most of them, unless i need one more. If I'm comfortable and i think i can manage with what i have. i stay out of the coops for awhile to let the others have a chance at their firsts. but if you get in the early ones , then you wont even have to worry about the end of the year.
I'd suggest for the ones that one to get one "for a spare" or just to test, or tinker with, to try to hold off a little a couple months.
but these are all suggestions, and ymmv.
-Chris
