Why would the tank go into a new cycle if the rock is clean new dry rock.
Assuming it’s not contaminated with anything likely to die and inject a major amount of ammonia into the system, I can’t see an issue.
When I built my rock structure, it started off very small and I just added rock as needed and as I modified and increased the rockwork without any issues. It was clean new artificial reef rock.
If your unsure of the rock quality just add a bit at a time as you design it, sit back and ponder how it looks and then add some more