[mothered]

First order being two Apple Watches 36.5 G each. For this order I plan to use the boxing method, but I will only start the SE for this order after the second order arrives

A combined weight of 73 grams, Is light enough to box without substituting the weight.

Are you absolutely sure that they'll be arriving on the same consignment?

For the second order I plan to order a MacBook Air. For this order I plan to simply DNA. After Ive successfully SE'd the MacBook I will then start a return for the first order a couple days after

Given It's the same company and the same account, the timing from one SE to another Is too close.

Being the busiest time of year, they may not have the manpower to thoroughly check each claim, but there's every possibility that they will, which will raise suspicion.