Supplies For My Car Road Project

I stopped at Home Depot this morning and inquired about what paint to use for my garage floor neighborhood project. The salesperson suggested some indoor/outdoor spray paint and recommended that I use painter's tape to mark the areas I want to paint. Since I already painted the floor gray, I figured this would be the street, and I would paint the residential areas over the gray. I chose meadow green to spray for the "yards" and found a beige color to paint "houses". After that, I think the spray paint won't work for the details so I will have to break out my acrylics and a small paint brush. Hopefully nobody will walk on it until I put some kind of protective coating over it. I want to get started right away, but need to clean my garage again. We recently moved the baby into a toddler bed, and her crib is right where I need to paint. I'm contemplating a garage sale, if I can get over the heat.