The only strategy that can win big or lose big is Martingale (other strategies IMO can only help you lose slower), within Martingale find a good combination of odd/win chance and multiplier (not too aggressive) after each lose is the way to go. Best setup for you is use Seuntjie's bot, turn of chart, play with its simulation mode carefully (at least 50 millions simulated bets) to see how it going, if you can win simulated mode 90% of the time then it time to go for real coin.

@Spaffin: If you don't mind getting alot of reward for wagering, among 1% house edge casinos, Bitdice.me site IMO is the best choice since it have two major components that can be treated as "fair" to gamblers: speed and minimum bet of 1 satoshi. Don't go for any site that offer too much but constrained in minimum bet (or speed limit on low stake bets) regardless of how low its house edge is. i.e: chance of lose big on 1% edge site with minimum bet of 10000 satoshi is much more (at least few times x3, x4, x5, ....) even bigger than 5% edge site with minimum bet of 1 satoshi. Ignore any excuse of prioritize bigger bets or remove dust bets, these are common excuses of most of the casinos out there, the real reason is: to make you tend to become impatient faster thus play bigger...and lose faster, they ignore the fact that the average stake size per bet is much much more than 1 satoshi due to the nature of Martingale.