If you're looking at closer to 150 gallons, remember that with saltwater, that'll be about 1300 lbs already. Assuming you're using a stand, possibly a sump, plus live rock and equipment, you're inching closer to 1 ton. You'll want to worry more about the subsurface, depending on your home'so foundation.
At the very least, I'd want something between the stand and the laminate so that it doesn't leave pressure marks once the tank is removed in the future.
And yes, wipe up the water with the quickness.