Creating a Windows VM Inside Ubuntu

[W Scott Lockwood III]

> So I had an idea of installing his Windows as a Headless VM so he can run it
>only when he needs to work on Adobe or play the games that cannot be
>installed on Ubuntu. I need your advice:
>
>How to do it as painless as possible?
>Should I use KVM or Virtualbox?

So, while I agree with Liam that likely Win7/Win10 would be best here 
for his specific application, It isn't very hard to use KVM/Virt-Manager 
and either an RDP client or VNC to get to the desktop.

Here's a not ancient tutorial (you may find newer ones) that should get 
you started. Let us know if you need additional help.

http://www.howtogeek.com/117635/how-to-install-kvm-and-create-virtual-machines-on-ubuntu/

-- 
W. Scott Lockwood III
scott at guppylog.com
(847) 579-9753