Move the tank LAST , and set up the tank at the new place FIRST
Also, in transport it is good to keep them in the dark (da-dum-dum!):joke:
Also, depending on the distance I would think about getting soem air-stones for the trip. I would also place them in a sealed bag (large one) in the tub/box to prevent spills, suicides, etc.
Also, don;t forget your priceless substrate and filter materials. Keep these is a sealed water container. You won't need all the substarate, but it's a good idea to keep some of it in water (add last/top to ensure this substarte is exposed to oxygen so it will continue to work for you after adding).
Lastly, I would defeinelty be mindful of pointing certain fish togetherand not overcrowding the bags. I would certainly consider using multiple bags depending on the numbers/size of the fish.
Good Luck!!
EDIT: Moving a tank with gravel/water left in it can be tricky and dangerous especially if you have rocks in it also. I never now if twisting the tank, tilting it, etc. will cause just enough stress

Although 29G isn't too large, so...