There are lots of apps to make win10 look and feel more like 7.
Rather than go straight to 10 I just put it an another drive while I set it up and try it out - this way I still have 7 I can boot from or 10.
If you are getting a new win10 pc you can still put your win7 drive in it also, so if win10 gives you grief just boot on win7.

Install Microsoft Fix it 50470 on win7 before moving hard drive to new pc hardware https://support.microsoft.com/en-us/kb/922976
You can also clone it.