I think it is worth trying Bravo to open with Gayle. Bravo, Ramadhin and Smith are all to similar in their batting approach in the late middle order. So, Gayle & Bravo to open with Sarwan, Lara, Samuels & Chandrapaul in that order could work. Chandrapaul bats well towards the end with the tail-enders and so worth looking at.