If you are going to build a Hackintosh you do not need to worry about bootcamp. The boot loader that you install with the Hackintosh build is capable of booting multi operating systems.
I would suggest that you use separate drives, it makes things easier especially when you are dealing with Windows.
Here are the steps I would take:
1. Get your Hackintosh setup and booting.
2. Once you are happy with how that is working, unplug the sata connection to the drive and install Windows on your other drive.
3. When that has finished booting and updating (numerous times) and is stable, plug your “Mac” drive back in.
4. Set the boot order in your bios to boot from the “Mac” drive first. When the system starts it will hit the boot loader on the “Mac” drive and it will display a list of operating systems that it has found.
If you do not touch anything it will boot into your Hackintosh installation, if you interrupt the boot process when the loader appears (hit left or right key) you can select which OS to boot from.
I have a Hackintosh that I first built in 2009 that is still running and it currently boots:
Mac OS Sierra
Windows 7
Windows 10
Linux
Linux is running on an extended partition on the Win 10 drive, Win 7 and Mac have their own drives and the boot loader see’s every installation. There is no need for any menu configuration as you might see using Grub (Linux boot loader), it just finds everything and offers to load it.
In case you are interested the boot loader that is used for Hackintosh installations is, at it’s core, the loader that was provided by Apple to boot the open source Darwin OS.
