Looking at your order I am a bit worried about the lone polish, since they are prone to being bullied. Maybe get a different breed instead in this mix?
When you cover all your openings with 1/2 inch hardware cloth, make sure to get a solid gauge, and use plates and screws or wood framing (sandwiching the wire cloth) and screws. Stapeling is not sturdy enough.
The run, in this design offers no protection whatsoever, all it does is keep chickens contained. Critters can go right through farm fencing, the openings are so big. At a minimum add electral wire at the too and bottom on the outside of that fence. Or just get electric poutry netting (easier to set up, movable). But you‘ll still have hawk exposure... The trees won’t stop a sharp shinned hawk (if you have those) but will offer some protection from the bigger hawks, so that is good! I would add a few hiding spots to the run (old low table for example).