We are thinking of doing the exact same thing due to a "budget issue" lol. We are painting some pine planks though. I will probably use an oil based epoxy paint. You can roll it on with a roller so it should go very quickly. Just have to make sure you don't paint yourself into a corner, hahah.

There is very durable acrylic paint made for porches and floors. Paint it with that.

Do the floor in the evening before you leave - paint your self out - and when you come back the next morning is should be dry. Then you can do the walls.

Thank you! We are looking to paint with zero VOC paint due to the fact that it's the middle of winter and my youngest has allergies/asthma. Can you paint on the particle board itself or do you have to do something special to it?

I also think acrylic is the way to go. You should clean the floors first. Paint will always stick best to a clean and dull surface and this is especially important for an area that people walk on. High quality paints and low VOC paints are going to cost more.

An old thread, but may I ask what you ended up using to paint with?