Group 1 - 7 big birds, 1 year old, BO, JG, and WY
Group 2 - Cochins (?) 14 weeks old 2 roosters and 1 pullet
Group 3 - 4 silkies - 3 pullets and 1 rooster - 10 - 11 weeks
I think I have this right?
I would keep the silkies separate. People have been known to mix the littles and full size birds, but it can be tricky. I would eventually put group 1 and 2 together. What I would do, is open that dog crate somehow, so that the Cochins could fit through it, they will go out and mingle with the big birds, but can escape back to the safety zone, where you have kept them, as needed and the big girls can't follow.
I would
 add a lot of clutter to your run. It is almost empty, makes no use of the vertical space, and pallets, roosts, old ladders, chairs, tree branches, mini walls give hide outs, and make the whole set up a lot more interesting for your chickens. It will give more shade, and offer places where you can feed birds in different spots so that a bird eating at one place cannot see a bird eating at another. It is especially important if you want them all to be together.
I think you may just be getting started? And you have some misconceptions about chickens.
- Being raised together will produce life long friends. Roosters raised together will not fight. Not the case as they reach puberty a lot of them will fight. Some of them will become aggressive, some will attack people, even if they were a pet a couple of weeks ago.
 
- Rooster chicks are darling, that part is true, but it is no indicator how they will be acting in a month, a week or even tomorrow.
 
- Size of the bird is majorly important in pecking order. Being raised together will not compensate for that. Little birds can have a rotten life if people do not solve for peace in the flock, but just wish they would all get along.
 
- for 11 hens, one rooster is more than enough. Even if you keep them separated, some roosters will fight themselves bloody through the fence.
 
As for feed, you can feed everyone either chick feed or all flock feed or if you have them separate.
My advice - put group 1 & 2 together through a one way fence line. Add clutter, remove two - three of your rooster chicks, and keep the silkies separate.
Mrs K