For something that small a couple of ounces of beads should be fine. Be sure the drain is plugged or sealed with electrical tape. Put the beads back in and forget about your hygrometer. As long as about 2/3 of the beads are clear you are good to go. Dont worry about fluctuations in Rh, over the long haul the beads will do their job. Anywhere between 60-65% is fine for your cigars. If you watch your hygrometer you will see fluctuations as the cooler cycles. Just leave the beads alone and you will be fine.
