clownbuddies,
Welcome to the Board!
If you have "lots" of live rock and live sand, you could be okay but more likely than not, right after your tank cycles, adding three fish all at once may overload the new biological filtration system. To be safe, I might start with one fish then add the other two a couple weeks later.
You mention you want to "hypo" the new fish. I think you mean quarantine, right? No need to do that if you start with one. You quarantine fish to make sure they're not bringing disease into the system infecting other inhabitants. If you don't have any other inhabitants, there's nothing to protect.
The Q tank must also cycle though so while you're cycling your main tank, you might as well cycle the Q-tank too.
Jim