I think you should keep Mr. & Mrs. Little Chicken. I am still convinced that once he understands he can't take on any other roosters he will escape upwards and be fine.
While he is very cute...I live with a cute tiny rooster who weighs one kilo (2.2 pounds) and thinks he can take on the one that weighs 3.7 (8 pounds).I am wanting to rehome him this week, I do not want to have the trouble of yet another Roo.
It doesn't matter if he already took many thrashings. He is still totally convinced he's the biggest meanest in the yard.