Certainly, I want to hit, so B/20*. Then I'd rather not play the 4, but the least bad one is 18/14. It puts blots everywhere, but I don't think it's too dangerous because White is up on the bar, only has a one point board, and unless he rolls some colossal joker, I'm going to get a lot of return shots with a good chance to reestablish a second point on my opponent's side of the board.
And with 6 men back, you should be thinking about mobilizing them anyways, they're pretty stuck as is, so 18/14 isn't so bad even though it sort of prematurely gives up an anchor.