Yeah delete first, within the timescale obviously. When you ask them to grace delete the name, they come back at you with delete it from your list then email back, so you already know what to do. If you delete first, then pm saying you made a mistake, you have done everything right and by the book. Refund is a given (well have been for me of which ive been very happy at times)
Note to self. Never buy domains after a heavy night on the lash.