Floor paint.

I've got a wooden floor to repaint in little green floor paint - previously painted in the same.
Can I do it with my graco 4 stage hvlp? If so any advice on fluid set and thinning? Would owatrol oil be suitable for the thinning? How long should I give it between coats? Or should I brush it? Which I'd rather not. Paint is supplied by customer and already bought. Size around 3.5m x 5m ish. Its all old floor boards in a manor house, old paint worn but other than that all in good condition