Calculated Considerations and Practical Expectations
You have to keep your expectations in check here. The Milestone System is not a gambling strategy. The reels are still controlled by chance. The sensible way to see it is as a passive bonus layer. Treat these achievements as little extra surprises that might pop up while you play normally, sticking to your budget and the core game. Trying to force a specific milestone, particularly one that needs you to trigger an expensive bonus feature repeatedly, can burn through your money fast. Let the milestones occur as you play.