any Indica in Aero would do well. It just depends on how you "Top" your plant or if you leave it so that 1 giant cola grows. By Toping your plants u increase the bushyness of it and more branches sprout out. Taking up more room. I would say top a few and don't top a few. see what works better as far as space whise. White widow would probly work well in Aero.
As far as ordering seeds online. thats not a problem,Your fine. If customs does seize your package for some reason they'll send you a letter stating that your package has been seized and that if you want it u have to come pick it up. I do have some advise for you though, make sure you go through a reputable seed dealer and make sure you use a pre=paid creditcard... Those bastards will start using your card if you don't and u'll have to cancel it. Also some seed banks take 10 days to ship , others will take 6weeks. keep that in mind.. i waited for 6weeks 1 time thats how i no.
Hope this helps. and FYI the seed banks are pretty good about shipping their seeds.. but sometimes times the seeds are duds and they dont pop. so if ur ordering like 4-10 seeds you might wana get a few extra!!