Same here SignaMMX, I also completed this Cake Climb level on the third attempt. No pre-game Boosters used, but I used a Free Switch to align two Colour Bombs together.
I was very lucky on the third attempt, in a few moves I managed to form and unite a Colour Bomb with a Striped Candy and then it was only a matter of time to be able to unite 2 Colour Bombs and after that it was just joy to see the level completed.