Welcome to TR!
If you are using the same rock and sand from the first tank and not adding anything else, then you will be fine. I would put everything in a rubbermaid with a powerhead and heater, get the new tank setup, add back the sand,
LR, and all the water, and then add your critters. You can do it within a matter of hours. Now, when you want to add more
LR- be sure to find the most cured
LR you can get and add one small piece at a time. This will cause small cycles, but if you do it slow and over time, you will be ok. Just add one small rock every 2 months or so.
As far as your zoas- what are your water params?
