150 to 8' 360g swap questions

[spit.fire]

So on Saturday I will finally be picking up my 8' tank
My question is do I have to fill the 360 and allow it to cycle or can I swap everything over and just top up the water? Both tanks have no substrate and the 150 has an approx total volume of 200g and about 180 lbs of liverock.

Livestock:
Naso tang
2x bamboo sharks
Hawkfish
4 small clowns
Hippo tang
2x sailfin tangs
Some sort of goby
Dwarf angel