You're talking about the "Paint Shop" systems right? Has a picture of a Camaro on the label.
If memory serves me it's a lacquer based system. So you would have to be a little careful if you plan on applying an enamel top coat on it, as enamels don't have the bite they used to. They tend to float on top of the undercoat instead of melting into it. No real biggie if you let the primer dry/cure FULLY, before applying the enamel top coat.
Ok even though it's pre mixed, let's not forget you also will need mixing sticks and strainers, usually free at paint stores, not sure about places like Auto Zone, PepBoys, etc.
Also you will need lacquer thinner to clean out your gun, normally sold in 1 gallon containers. And don't forget some type of pre cleaner you will need to wipe down the surface with.
Enamels tend to be a lot more impervious to stuff on the surface, lacquer not so.
Any primer can be a high build. Just a matter of adjusting your gun's spray pattern to build up the surface, or use multiple coats.
AND A MUST WILL BE A CORRECT RESPIRATOR! Please read the MSDS on the primer.
And spraying from a gun, even an HVLP system is going to make a lot of over spray. Lot's more then a rattle can does. So you'll need to enclose your "spray booth" area.
And some type of ventilation for the area, otherwise the wife's going to kill you from the fumes. And on that topic, dependent on your neighbors, they may not be too happy if the over spray get vented outside and onto something they own.
Not trying to dissuade you, but there's a little more involved then just buying the paint.
Can it be done? Sure. I do it all the time. But I have great neighbors, and my wife somewhat puts up with it. And I've been in the business for roughly 35 years, so I have the correct safety equipment to do it with little mess or hazard to me.
p.s. one last thing. Disposal of your left overs. Please don't toss the left over paint and such in the trash. It needs to be disposed of properly, as it is considered a Hazardous Material.