I always admire people like you Sue, who are really 100% dedicated - socially with the club, and also to have that many hamsters
I only have 6 hamsters, so I find I clean cages on Sundays and every other Monday when I don't work on that Monday, I have a rota and do cages every 2 weeks. I then find my daily rota for handling/out of cage time is is 4 hamsters - for example day 1 is Pearl, Yoshi, Opal and Fawn. Day 2 is Pearl, Yoshi, Felix and Titch - I find the dwarfs don't require as much of my time as the Syrians. Pearl and Yoshi get 30 - 45 minutes each a day, and the dwarfs variable from 15 minutes to 40 minutes depending on what they seem to want. Feeding and doing water bottles takes about 10 minutes or 15.
On average on a daily basis I would say they take up about an hour and a half of my time, on a cage cleaning day I would 3 hours depending on cages.
I also keep 2 rabbits which I spend roughly an hour a day with