Depending on the size of the venue add more of the same unit, but you need at least those 2 (or similar products):
ADJ Dotz TBar System (cheapest way to get decent “can par” system) for basic lighting
ADJ Jellyfish or Jelly Gressor (cheapest all night going moonflower) for the flower effect
This you can upgrade with:
Other flow effects: Gem pulse, Revo III, Monster Fun, …
A decent Hazer would be good for feeling.
I would for the beginning stay away from scanners, moving heads and lasers. While effective you need more than one and they are hugely expensive and you need more know how to operate them.