Hi, I am almost ready to update my Mac Pro 1,1 to El Capitan. It now has an original 7300GT 256mb and 12gb RAM. I read some people say El Capitan disabled bluetooth and wifi, and others that don't. I only have apple wireless keyboards, and if bluetooth gets disabled I cannot use a keyboard. Do you know anything about this topic? Also, would a PC version radeon 5870/nVidia gtx650 flashed for Mac work properly? I would really appreciate your answers.