if you paint primer over it, you will have a pink bleed even if you try three coats - so, one coat, sand down and then a white shellac I believe to stop the bleed. This is an acrylic and you will need acetone for your brush...........
You've got it minty. A light rub-down and tack-off between coats will help to get a good finish. I would also buy some meths to wash your brush out during and after applying the primer....it's shellac based & dries very quickly.
shed will have to wait for nice weather..the pits here at the moment. but hope to have it done over weekend.....oh is away for a few days in a fortnights time so want to get internal stuff done then...fed up looking at mahogany (Inherited it ) ..going for nice bright white....then get rid of wood floor in lounge and get a nice oatmeal carpet..although he doesn't know an of this ! lol..probably will not even notice !