I have a twelve year old stained top/dark green painted bottom table and chairs. I will be restaining the top and want to paint the table base and chairs all black. A satin finish similar to Pottery Barn, Ballard Designs, etc.

What is the best way to approach this project? The current factory paint is shiny and has chipped down to the wood in some places.

Do I sand and then prime? OR just prime? What is the best type of paint oil based or latex? Can I get a way with using spray paint? Spraying would be the easiet option as there are a lot of grooves and slats. How many coats of poly?