that sucks, but why not just have them delivered to your house in the first place? putting your friend in the middle like that wouldnt protect you if they found out what was being sent somehow, your just putting your friend at risk too.
and this is my number one argument when people say use a prepaid visa and send to a friends. the visa i cant really argue with, but no way in hell id ever send that stuff to a friends house.
i DO however understand your not wanting to have it shipped to your parents house, but i do have some advice.... WAIT. if your about to try to get a grow on in your parents house, you arent just the only one at risk, you parents can get in just as much trouble, if not more (assuming your a minor) if you abosolutely HAVE to grow, find a secret spot somewhere that only you know about, off property, and be very VERY careful when you visit the site for feeding etc.
as much fun as growing is, you dont want to be the reason your parents go to jail, that can be a real deal breaker for your relationship. if your not underage, and only stuck there for now, then i would say get a job start saving up, get out on your own then grow away. i did it at 16 and never looked back (though by modern standards iam a collegte dropout stoner loserm but i still have fun!)