god i have to move in august:nervous: not looking forward to that!! i've been thinking about it ever since i set up my tanks, and i was planning the same route you're taking
great minds think alike!
i figure that if the same water is used, and the lr/ls stays in the water it'd go alright. only problem is that many of those plastic rubbermaid bins have a filmy oil coating that must be washed off. i also was going to saranwrap over the top of the aquarium to prevent algae on the walls from drying up on the drive. for the fish on longer drives most lfstores will put straight oxygen in your bags for you. i personally use a 10gal tank on the passenger seat, glass lid saranwrapped on and blow cpr air to them once in awhile, but it sometimes gets splashy. i actually bought my 55 in melbourne fla and moved it to st. louis in the back of a pickup (w/topper). brought back tons of freshwater fish in it like this with 1/3 full. we sat it on 2 tires for cushioning and i won a $20 bet with my dad that it could be done.
ok, now everyone slam me on how stupid i was. i emphasize was.
edit: oh yes, i'd remove everything from the tank if you're doing stairs. just a sandbed in my 55 shifted tons of weight on me (i was on the bottom) when we did those. thank god it didn't break, must be a darn good tank.