Buying used cam sets

[olkarz]

Is the LSA cam a good choice for a 600whp turbo 5.3L motor?
I found this guy that has a used 09 Z07 factory cam set and this new LSA cam set for sale. $150 either set.

I do plan to go up in power once I'm confident that the truck is running good for a few months. It's going to be a daily driver.
Just looking to get the best value for my money.

Setup is:
stock bottom end
stock 862 heads, but with a stud kit installed
stock truck intake
60lbs injectors
single T76 w/.96 ar
stock fuel rails
320lph fuel pump
T5 WC delivering the power from the stage 4 exedy kit