And Krav Maga, Yep, it's effective, Israel army uses it and police. You must be at least 18 and clear. Or What about Muay Thai? It's really effective, try it, if you like it or if it's close..
Or Judo for grabbling too... Judo is like 50&Throws 50&matwork Brazilian Jiu-jitsu is 85& matwork, Visit their dojo's and practice there once or two, and you should see if it's good for you.