Bigger and Better

I'm in a 55 with overflow to a 20 gallon sump. Simply put i would like a bigger tank most likely 150. Can i use the same water live rock etc and switch to a bigger tank? Generally this would mean adding additional sand and rock. My tank has vita rock panels both on the back and bottom (no sand) so i would need to add sand. I would not be having new panels made for the bottom but want sand. Am I going to have to cycle a new tank? Or is there any way i can get a larger tank and just switch, adding sand and additional live rock? I would be getting a bigger sump as well but using the same Protein Skimmer, UV S, Calc Reactor, Auto Topper etc. What do you all think?