3-4-3 is best with 1 st, 1 aml and 1 amr.
Using 3 st might work, but it would have major defensive flaws, plus 3-4-3 is better with attacking down the flanks and not through the middle, but you'll have to go through the middle with 3 st. Bro you've got to control your urge to bid, you can't buy 3 good st, how many tokens did you waste?