I was assuming that you would play 4231 and that Suarez wouldn't play as a lone striker because he is more of a SS, and Carroll would be in that position, thereby forcing you to choose between Suarez and Gerrard in the role behind the striker. But then again you did play a 3421 formation earlier in the season which had 2 central attacking midfielders so I guess Gerrard could fit in in that.