Well 10% looks small but the number to wager can be still considered as big amount. It is  the same when we were trying to reach Platinum 1 from zero. If you have some money to lose (no more than the possible level up reward), I think you can force yourself to chase it but it is better to chase it slowly but sure. Maybe you can try by wagering $5k-10k every day by playing the in house game with small bet amount (0.1$-$0.5). I'm sure that you know what is the best scenario for you to chase Platinum 5.