So a majority of people on the forums said that you should skip out on lash and just do charge/melee build (it is called 'Brawler' after all), but I fancied going with 6/6/6/4/4 just to try it out and with that final score you can see that it works pretty well. Now I have reset my powers and went for the melee build which works great too so it just depends on what your play style is.