You need a Windows machine to run the .exe that downloads the ISO/USB. I would recommend downloading both types of media (ISO/DVD and USB) and keep both copies, as a contingency, if either is damaged or lost.
It would be a quick test if you run BA and provide the ISO as input, it will either accept it or reject and you will know immediately. If it is accepted, it can be installed.
From Boot Camp 5.1: Frequently asked questions
Which versions of Windows work with Boot Camp 5.1?
You can use:
- Microsoft Windows 8.0 and 8.1 (64-bit)
- Microsoft Windows 8.0 and 8.1 Pro (64-bit)
- Microsoft Windows 7 Home Premium (64-bit)
- Microsoft Windows 7 Professional (64-bit)
- Microsoft Windows 7 Ultimate (64-bit)
Windows XP, Windows Vista, and Enterprise versions of Windows 7 and Windows 8 are not supported.