If I might offer a suggestion, I'd recommend a 3 x 3 or 4 x 4 or 4 x 3 or 3 x 4 or some other similar iteration for the table size rather than a full 4 x 6 in order to keep the games quick. The Kill Team Supplement does this, and those games are 500 pts or less.
500pt games should never be on a 4x6. Always 4x4
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