PCA Steps are driving me insane!

[newcool]

Ive been playing the Stars PCA steps, always starting at step 1 and climbing my way up. Ive made it to step 5 and step 4 a few times but then busted out, which is very disheartening. Im willing to invest $500 which is good enough for 66 step 1s.

Looking for advice about whether its better to play them in batches or go straight up once I reach the next level. Any other advice about how to make it to step 6 would also be appreciated.