+1 on the respirator and the Harbor Freight gun. If you have any inkling how to spray paint, you can make out well. You can spray outside if you do it early on a clear, calm, warm morning, before the sun hits the car or in a shady spot (not under a tree!).
I have this gun from HF. I bought it with low expectations but it has exceeded them by a lot. It is almost always on sale for $10. You might want a stand for it, but you can hang it from a rope, too. If you look at it, check the customer reviews and read the "most liked positive review". Some guy has written a virtual user manual for it and posted it as a review.
Frankly... I don't see what could possibly go wrong?
How much product you think I need for a hood? Paint and clear...