Tank cycled?? Or still to come?

I am setting up a 55g cube with 20g sump. To replace my 20g nano. I purchased 30lb of fresh live rock about 20 days ago. It was placed in a tank at my parents house with a heater and power heads. And lights running. This is while I was on holidays. It was then transported to my house (10 min drive) it was moved in tank water so was never exposed out of water. It was put into display tank with about 5lb of extra Rock out of current set up. This was all moved into tank 7 days ago. I have seen no rise is ammonia. Nitrite or nitrate. All still at oppm. There may have been a small rise in ammonia. Less than 0.25 but hard to say. Has my tank cycled??? I don't want to rush. But I need to shut down my current 20g asap. It has another 10lb of Rock remaining that will also be added . What should I do!!! My small tank needs to be shut down