Need advise! Don't want to cause a major cycle.

[FishyFishy!]

So i'm purchasing a new 187 gallon with 90 gallon sump. I currently have a 110 gallon with 30 gallon sump that is a FOWLR tank. I'm selling this tank, and moving all of the inhabitants from one to the other.

I am a little worried about causing a cycle in the new tank when everything is swapped over. Most of the sand and all filter media will be swapped, along with about 100 LBS of live rock, and all of the water.

What can be done to prevent a fish killing cycle? Obviously there is going to be much more water being added to the 187.

And another related question... How long will my fish be ok in my 100 gallon holding tank? I have 2 Koralia 4's and my 890GPH mixing pump from my hydor performer running in there with all my live rock.

I"m just slightly lost because i've never made a jump this big. Usually its only 50 gallons or less!

Any help would be appreciated.

Thanks
Mike