pretty much the above. everything in your 29 has all the good bacteria you need on it. a few buckets or tubs to put the fish, gravel, etc in while you drain the 29. move the empty 29 put the new tank in place, add gravel, filter, decorations etc. fill with water close to the right temp, then move the fish into their new home. should be a 1-2 hour job. none of this cycling sillyness as you already have good established bacteria.