First fish

[apepper]

I am planning on getting my first fish in the next few weeks for my 45 gallon tall. I have been considering the following fish:

Percula Clown(s) (Amphiprion percula)
Lawnmower Blenny (Salarias fasciatus)
Six Line Wrasse (Pseudocheilinus hexataenia)
Green Chromis (Chromis viridis)

I was planning on adding the clowns first and others in the future, I am in no rush. Are the clowns the best choice as a first fish out of this group or should I choose one of the others. Any other recommendations, additions deletions would be welcomed.