Backyard paint booth

Definitely use an hvlp gun. Some people I know have had good luck with an electrostatic setup,like used in powdercoating. Helps keep the over spray to a minimum. Use a hepa style filter on the exhaust of the garage.The charcoal in it will neutralize any solvents and keep your nieghbours from bitching about smells. As for bugs,get up early and try to learn what time they come out. Spray before they get up and allow enough time for the paint to harden.