How may chickens do you have or will have?
That little dog cage sized red thing needs to be bigger if you plan on having more than 2 chickens. Their run needs to be a lot bigger than their coop and that's barely big enough for a small coop.
As for the hawk, if you know where is nest is, you don't have to kill the hawk, but destroy it's nest so it will move on. If it rebuilds close, destroy the new nest too till it goes somewhere else. I hate to be the one to burst your bubble, but if you only have 3 or 4 birds to fit in that tiny cage, you won't have any birds left after a few weeks with a hungry hawk near by.
I'm not trying to sound mean, just realistic. I'm sure you are in love with your new birds but if you want what's best for them you might want to do a little more research on coop size, Sq ft/bird in coop and Sq ft in run, and definitely about the 3 S's when it comes to anything that threatens your beloved birds/livestock. I would use the 3 S's on the hawk myself, ask someone if you don't know what that is. Good luck to you and your birds.