Nothing at all wrong with having several breeds for eye candy and delightful personalities to boot. Just remember, when it comes to breeding, whatever you decide on, keep it pure or your heritage flock will be just another motley crew of birds in your back yard.
If if you really like buff rocks, there's a guy in the hot west that has some beauties! I can't think what state he's in right now but perhaps I can find his info for you.
Oops... right guy, wrong breed. He has buff leghorns! Stunning birds! But... I believe there is someone in Texas (?) that got some buff rocks from Tom Roebuck this past year and boy are they nice! Hopefully that person still gets on here and will see this and help you out if that's the way you want to go.
Oops... wrong again. It is cbnovick and they live in Scottsdale, AZ so quite hot there and the birds are the ones I mentioned. If you look up that user name, you can find them... again... if it's what you decide to do. Just trying to help.
cbnovick farmed out her Roebuck Buff Rocks to a couple of people here in AZ including me. I decided not to continue on with that breed, and sold all mine to another gal about 1-1/2 hours from me, Debra57 on BYC. She and the other person who got the Buff Rocks, maryhysong on BYC, are working together as partners with them. ***Whew*** hard to keep up with all that moving around but now you have it!