Seems like you have a plan! A 10 gallon aquarium filled should weigh around 110-120 pounds without substrate, so you will need to take half or more of the water out before you move it probably. I have done several quick cycling setups before, pretty much what you have stated in the first post is a good process. I personally would drain all the water into 5 gallon buckets, remove all my fish into one of the 5 gallon buckets and add an airstone so you can keep them in there for a little while. Then when you are ready to set up you 29 gallon, add the 5 gallons of reserved water from your previous tank, your drift wood, and your plants, then fill the rest of the way with treated water, then turn on your filter and let the filter circulate the water for around 30 minutes, I usually let it go for about an hour to be on the safe side, at this point you can add on of the bottles of bacteria you can get from your LFS if you want. Then after you've waited 30 minutes to an hour just simply add your fish and toss out the last 5 gallons of tank water.
Another way you can go about this, if to buy a few 5 gallon buckets with lids, and store some clean "live" aquarium water in the buckets, then you can have several buckets of "live" water to start your new aquarium off with. This is the method I use when I move, I will store water from a water change and keep it for when I go to setup the tank after I move.