Hi Rob, Hows life,? Good, If you use MDF, do all the things you want to do and some more:( sand it well,(very well) make sure it is dust free before you prime then sand some more then sand again, the trick is to spray paint your cupboards with a base primer, then sand some more, it your arm drops off. TRICK: the more you sand the better it will be when you apply the finishing coat,I made all my office furniture, and even saying so my self it looks great, and saved money,to buy the same from a shop would have cost 3 times more. Happy sanding. John 2000...... PS: stay with the MDF.