i got issues with my gallbladder also, as did my mother who had hers snipped (from eating too much peanuts)... i have found that i had to cut down way way way on eggs, now i eat at most two in a day, because the 4-6 i used to do now gives me biliary colic reliably, at least mildly... i don't find any problem from full cream cow milk
thanks for updating on the status of the process, i've definitely gotta look into how to do this thing