Actually, I think if WI can put like 150-160ish on board, they have the bowling to defend it. I know Umar Akmal's in good form and all that, but their batting lineup is not exactly reliable still. I think WI can pull this off tbh.
The best idea would be to put pak in first,that assuming he wins the toss.If the total is kinda low or average,the WI can finish it of with ease.In case it goes beyond 200,WI will at least know how to approach the target and whom to attack.
WI bowling till now hasn't been exceptional and that is the reason WI shd bat second. !!