(OOC: 1 and 2 are on the top of the big thingy? If they're in range, he'll take them. Otherwise 6, if in range, and then 4, who is definitely in range. I imagine most are in range due to the fact that the top parts aren't really as high as they seem, they are just lifted to let you see the whole map.
EDIT: If he must shoot 4, his last choice, have him go before Jerrell if possible since we both won initiative and it avoids the -4)