hens are RIR, White leghorn, EE (always a gamble I'm sure) , black Austrolop, and Sumatra hens.
All of the Sumatra's have yellow foot pads. I honestly haven't paid the least bit of attention to the foot pad color of the hybrids as I wasn't concerned with it.
As Stated, these birds are not for sale. Hens are for eggs, 99.9 % of roosters are for the freezer. If a hens lays poorly, she will be in the freezer.
Only time will tell on the success. The roosters at 16 weeks are getting to be a nice size. I'll see how they look at 20 weeks and may dispatch one to see how the meat is. Egg production I'm not worried about. I only hatched from my best laying hens. So I'm hopeful that will show in the pullets.
How much does your biggest Sumatra male weigh? I don't think I would use that legnhorn at all. If meat is not a big deal maybe try him to a white leghorn.
Walt