I would not use dollies with moving at tank that can put to much pressure on the glass and with that much weight it probably would brake.
Lots of friends, pizza and beer.
I used four suction cups to move mine which I purchased from Amazon. They were gold.
I had four guys help and used a moving dolly , straps and moving mats to move the tank down tha stairs where it was to tight four us to used the suction cups. Took our time and used my fear of damaging the tank to review every action of moving the tank.
When you finished moving yours, come move mine!!
That are 8" Damon vacuum suction cups. 39.99 on Amazon. I can send you a link later if you would like. You would be welcomed to borrow mine but Archit from love the reef has them right now.