So I bought a 14 Pro for home delivery on Friday.. I have changed my mind and want a Pro Max, so I will have to go to store to exchange. By the time the delivery arrives, it may be out of stock (there will be some available in store initially), so wondering if I should purchase online and reserve for pickup and then do the exchange once there. To further complicate matters, I used a fair few gift cards for the 14 Pro, so if I buy the Pro Max on a credit card (just to secure it), can I essentially return both and then rebuy that same Pro Max using the gift card refund?