Only play from early win streak and lots of gold. Because you are aiming for scaling 5 costs, aim to level 9 around end of Stage 4 / beginning of Stage 5. Best Draven quests are dealing damage for gold, but avoid the 10k damage in 1 round because you can get trapped.

Stage 2: Slam items aggressively and play for full win streak with Draven items. Ideal opener will be some kind of resource engine like Rengar or Blossom.

Stage 3: Continue prioritize win streaking. If you have an econ augment, you can go Fast 7 (before 3-3) to maintain win streak if needed.

Stage 4: You can start losing rounds while focusing on econ. Fast 9 end of Stage 4 and look for the scaling 5 costs like Draven, Maokai, and Ivern.