If you're gonna winstreak I really wouldn't do SnD. Even if you have a beast team you can still lose the odd game even if then other team suck, if they are more organisd then you (which sounds unlikely but may happen) or 1 player on the other team clutches or aces then the likelyhood is they will win the next round and from there it can go downhill for the rest of the game. Win streaks are much easier done in TDM or sabotage, and organised team will always win and you will never meet another organised team in TDM or Sabotage.
That's just my 2 cent's though, good luck with the streak, mine's 146