As far as info goes, the body shop you are using should be able to get you anything you want, at jobber prices, have you talked to them? They my even have enough left overs to do the job.
Just a thought...
Throwing a "nice" paint job on any vehicle requires the body work to be up to the quality of the paint. How is the body? Is it straight? The blitz black will be a little bit forgiving on imperfect body work, where as the dark pearl blue had better have some straight panels under it. If you want it to look like a quality job with the glossy paint make sure the body work is quality also.
Mark