Level up to 4 early if you want to start a win streak. Level up to 5 to try and continue the streak.
If you're weak in the early game, you can opt to save gold and lose streak instead.
At Round 2, level up to 6 regardless of your start. Put together the strongest team you can.
At Round 1, level up to 7. Roll down to stabilize your comp if you are weak. Afterward, save up to hit level 8 and complete your comp.
Try to look for Ashe 3 at level 8. Your Draconic eggs will help, so you shouldn't need to slow roll too much at level 7, but you can roll earlier if you are very close and want to spike.
Make sure you don't rely on Draconic for too long and replace units like Sett and Udyr with stronger late game units.