You will probably have a small cycle anyways but it wont/shouldnt take nearly as long. Mostly from stirring up the sand.
Drain water into containers
have a buddy help move it out of the way
Set up the new one and transfer stuff over.
Maybe keep some of your animals in temporary housing (buckets with air/water movement?)till you see what the cycle does.
The nite-out product is pretty usefull too I think. It is bacteria that should just give you a boost.