Which specific paint are you using? Is it a metallic or solid color? Will you be using a hardener? Have you checked the mfg spec sheets regarding thinning?
An HVLP spray gun will give you the best material transfer (least over spray) but will require a high volume of air but at a lower pressure than a standard gun. My professional HVLP requires 9 cfm air at 60# pressure as an example.
Thinning with acetone works but since acetone evaporates VERY quickly, it's use can result in a dry nearly sandy finishes it doesn't keep the finish open long enough for the paint to flow out. The addition of a reducer like PCL brand medium universal exempt reducer 8050 to your acetone at a rate of about 1 : 10 reducer : acetone will greatly improve the flow out though it is possible to over do on the reducer which will promote runs.
Don't paint on Monday. Spend the day fine tuning both your spray techniques and paint mixing skills. Mix up small batches of paint writing down exactly what you did and practice spraying it on a smooth non porous surface. Good luck!