I would say shootfighting would be the way to go.
There you will learn all variations of fighting from standing to groundfighting.
But fact always remain...
If you are up against more then 2 persons nothing will help you
But then again I trained various stuff for 15 years and I never had to use it.
YOu can always talk your way out of situations. If you wanna learn to fight to acctaully go out and fight then you are thinking wrong.