Spray painting can definitely save you a lot of time on certain jobs. First and foremost is to take note on the specific safety factors when it comes to spray painting.
You'll need a top-quality carbon filtered mask, as there will be a fine mist of spray in the air and you do not want to be inhaling this. Also, a cheap pair of coveralls will do and you can find some of these in the big box stores.
See the links below on the different areas of spray painting that I have on this site.