With the increased variance in Short Deck Hold'em, I'd increase that to 58.5-60 max buy-ins(585-600 BBs or 58.5-60 tournament entries) due to the 17% increase in variance(if you thought Texas Hold'em's variance was bad, bless your soul if you play this game).
When playing Texas Hold'em, the ideal bank roll is 50 max buy-ins (Usually 500BBs or 50 tournament entries). First off, I can't stress how important bank roll management is when playing this game, without proper bank roll management you will more likely than not find yourself on the wrong side of variance before you know it. Several well known players on the Poker scene have been promoting Short Deck Hold'em with Phil Ivey claiming the game 'suits a more gambling style of player', which I would agree with as the variance in this game is much, much higher, but with proper bank roll management and use of the strategies I will discuss, the game is beatable just like Texas Hold'em and Omaha.