you can't get in trouble for seeds. The worst thing they'll do is take them away from you...big deal...try again.
Warning on those gift cards, some can't be used for certain purchases. Make sure the gift card you're using can be used both online and internationally.
i'm getting mine sent another adddress... even though, i feel i would be okay to send them to address... better safe than sorry.
i found this link to DEA micrograms they actaully found some seeds, when some sent from canada arrived in the mail to an inactive grow spot in Maryland they already busted... by reading the article i got the impression they do not run across that type of shit EVER!