Hello, my name is Ryan from South Korea.

There are few legal casinos here where only international guests are allowed. The blackjack rules for this casino are as following:

6-Deck
Paid 3 to 2
DOA
RSA
Stand on all 17s
Late Surrender
Penetration about ~%70
Minimum Bet: $10
Bankroll: $1000, but I am able to stretch it upto $5000.

I'm a beginner, but I mastered Hi-Lo counting strategy and memorized Advanced Strategy with all full indexes playing Counting
game applications on my phone (haha..).

1. Which betting system should I use? Positive/or Negative progression? Which specific one?
2. At which high True Count should I start applying the specific betting system?

Thank you So much!!