I am attempting to calculate bankroll size for SnGs, but my result doesn't make sense (to me at least). 75 tournaments, 13 wins, 7 seconds, 7 thirds, 43 OTM. I get that is an EV of .6667, and a SD of 2.3522, and that the bankroll for a 1% Risk of Ruin is 19.11 buyins. THat seems way too high. Is that accurate?