I'd say you'd need a powerhead to keep it circulating in the bucket also. Not just a bubbler. You want to wait until you have no ammonia, nitrites, and low nitrates before you add any life to your tank (fish, inverts). Let the rock cycle itself out. There will be a little die off even w/cured rock. You lower nitrates by doing waterchanges, generally. The tank will take care of some nitrates in the live rock, but that bacteria is slower growing than the other...takes more time to do. Test with a liquid test kit. Salifert is best but API is alright to.
You could just save up the $ for it and then get it when you're ready instead of buying this way ahead of the time. You wouldn't have to mess around w/a bucket.