Well you can use AMD or Intel, but as I mentioned be aware that Microsoft ended mainstream support for Windows 7 in 2015. What this means is Microsoft no longer releases feature updates for Win 7 which includes processor support. This coincided around the time the 6th gen Intel chips came out. Now this doesn't mean it won't work, but it does shift the responsibility of support to the CPU manufacturers. Intel did not provide any updates, but AMD I believe did provide Ryzen support for Windows 7. There are other devices that have dropped support as well such as USB ECHI otherwise known as USB 2.0 so that would also need to be emulated at the BOIS level and only if the manufacturer provides a BIOS update.
TL: DR versus
Windows 7 is fairly difficult to get to work with new hardware due to lack of hardware support. I would buy a Windows 10 license.