Order it an you can choose 7 instead of 8
Two weeks ago I bought a Lenovo T530 with Windows 7 for my stepfather, who didn't want Windows 8. I personally run Windows 8 Pro on my MacBook Pro using Parallels Desktop, and it runs fine.
"Probably the best operating system in the world is the [operating system] made for the PDP-11 by Bell Laboratories." - Ted Nelson, October 1977