Adults can be tamed pretty easy as long as they are a friendlier type breed. Silkie cochin frizzle. Just takes a little time but give them tasty treats so they associate you with something good to eat and handle them daily and the experience I've had they useually tame right up.
Hope I helped...
Yea I was trying to remember what else I was going to say but it was that u can't sex then at a young age.
Just an idea but sense u already have a grown hen why don't u get hens. That way u can get the silkie and or others.
Also I know black sexlinks also known as white stars (I think) you can...
I was thinking cochin too but I can't remember how heat tolerant they are.(I need to research that again). I was also going to say silkie or frizzle b/c they are friendly and not flyers so you will need to make sure there night time roost are low enough for them to hop up on.