[mothered]

The only problem here is repeating the SE on Apple product, but what if I do my first SE on an iPhone with DNA then change the Amazon account and try to SE my next Apple product

SEing with unrelated accounts speaks for Itself.

No need to elaborate.

Is doing DNA completely off the table for my first SE, or the issue is repeating it (on the same account) and rise suspicions?

Any method Is obviously not an Issue on the first SE, but do not perform subsequent SEs with the very same method, particularly In close timing.

I'm looking to attempt a SE for the iPhone on their official website by splitting the payment, so I can afford the thing.

What method should I use with them ? Empty Box ?

Too heavy to EB It.

Hit the wrong Item received.

Will the one-time exception make it easier for me to succeed ?

It depends on the circumstances of the claim's assessment.

I've heard DNA is not suitable since they do not care about theft on your end.

Correct.