I would add the more territorial fish later. Clowns and tangs can be quite territorial.
I would probably start with the cardinals, although 3 at once might be a bit quick for a short cycle. chromis' are another fish that I have that are not territorial in my tank. Starting with 3 small ones of those would probably be OK.
The goby is territorial, but nobody else will bother him down in the basement, so he can be added any time, preferrably once the diatoms start to show up so he has something to eat.