If I was you, I'd spend the extra money and go with a standard basecoat/clearcoat paint system from Dupont or PPG. Laying down the paint isn't difficult...its all in the prep work! You will sand your fingerprints off by the time your done, and if you didn't, you didn't sand enough. The Summit stuff IMO looks pretty cheap. I've seen a few cars in person with this paint, and while it may be cheap and brainless, it doesn't have nearly the depth or sheen that a nice Dupont or PPG will have.
As others have mentioned, take your time and REALLY prep your workspace. It's very important that you've made your spraying environment as clean as possible. Sand the car down OUTSIDE of your spraying area, wipe the whole thing down, then roll it into the booth, mask everything you want masked, then tack cloth the whole car THOROUGHLY!
I spray prototype models for a living, and we have a full spraybooth and we still get dust in the models sometimes, its just the way shit works when we're in a rush to get models out the door when clients are in a rush. Prep is everything! Don't be afraid to get your hands dirty, you will be super satisfied looking at your freshly painted car when its all done!!