[mothered]

I imagine DNA is probably best fit for this because I'm like 90% sure they'll just leave it outside my apartment

^ Perfect DNA material.

Double-check that an OTP will not be required on delivery.

So since this is my absolute first SE from Amazon, is there any advice you guys could offer (e.g. if Amazon dealer matters, or if dispatched by Amazon is more favorable)?

Sold and shipped by Amazon.

my account has a few purchases over the past year and absolutely no refunds, do you guys know how much it's age effects the success rate?

A mature/aged account without any unusual spending patterns and returns/refunds, does not attract attention as opposed to one that's been freshly created.