Make Google apps usermode
I'm really not sure what you're asking. Do you mean that you wish to uninstall several Google apps to only have  a few apps by Google on your phone? 

Are you rooted? If you have root access, what you can do is use ROM Toolbox Pro to remove system apps (Google apps) from your phone without needing to flash a different ROM for this ability.

Please let me know if this answers your question or if I misunderstood your question. 

Rooting a device: This can be accomplished using several different methods. There are several one-click root apps like KingRoot, Framaroot or TowelRoot.



Convert System Apps -> User Apps

You can use an app called /system/app mover. This is an easier method.