Ok. I'll look into that stand. But I think I'm just going to put it on the bottom shelf of my door to Narnia. Currently I have a 10 gallon and 5.5 gallon there but they would be easier to move than a 30 I think.Get a Brooklyn stand from PetCo. They are cheap and super sturdy. Then you won't have to worry.
For a 30 gallon tank you have to figure the tank itself weighs about 50lbs, then with water weighing about 8.5lbs a gallon, that is 255 itself. Then add the 30lbs of sand plus decor. So you are easily up to 350lbs. If not more. Do you really want to trust a home made stand? If you don't know the person?