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 3-2, level up to 6 regardless of your start. Put together the strongest team you can.
At Round 4-1, level up to 7. Roll down to stabilize your comp if you are weak.
Save up to 50 gold and begin slow rolling for Cho'Gath 3.
If you are able to get a Mutant Emblem, you can go for 5 Mutant at level 8, or have 5 Mutant at level 7 by taking out Taric. In this case, put the Mutant Emblem on Sion.