I know this is older but I just saw it.....
What color is the hen? That's going to be important.
I put a black sex link rooster over brown/wild-type Easter egger hens and got a mixed bag of babies.
The first and third hens laid green/aqua egg. The second and fourth hens...
Do you know your babies won't be sex linked? So really, any rooster is fine as you'll be making barnyard mixes anyway. Just choose a rooster with traits you want to pass along--I always start with temperment and go from there--is he nice sized, if you know his momma was she a good layer, etc.