Yep, this will work fine. no need to re-cycle the media. just keep it wet so the bacteria stays alive. I would suggest a battery-powered bubbler as well. They are cheap. I would suggest doing all in one day if you can, then you don't need a large rubbermaid. Take out the fish. drain the tank. move all the ****. add your substrate (gravel/sand) back to the tank. fill up the tank with new water. hook up your same FX6 (I wouldn't even bother putting the media in the travel bucket). let it recirculate for maybe an hour and you're good to go. I moved a 11" rhom from chicago to cincinnati (5 hour drive) in the winter in one day. I wouldn't plan on doing/moving anything else that day, but should be fine. if you are worried about temp, or the fish is large, I have found that the 10 gallon water coolers they sell at home depot work well