The spray guns would be perfect for this. I use their $30 all silver siphon cup gun and for gravity feed, their purple with white 20 Oz cup HVLP when I can get it for $10. I recommend the purple one for the price. It's a good gun. It's cheap in terms of build quality but it sprays good for $10. It's not as efficient with fluid as a $300-$600 HVLP would be but it works just fine.
I've got a pile of those orange corded drills. They're not bad. I've used the extra brushes in them to fix other drills. Really for $10 when they're on sale they're decent. The bad is the keyless chuck. You can't grip the thing.