aeroponic sprinkler heads?

i am going to head over to hd soon and wondering for a small aerponic system what kind of sprinker heasds should i get also its killig me ooking at pumps. like how big do i need. I wanna run like 2 pcx pipes thru a rubbermaid and have like maybe 4-8 heads in all. I think. Cant wait to got to store but i always buy a whole lotta crap i dont need, wanna get it right this time. So what ehads i looking for and what cheap pump i want por favor?

i found these on ebay now i need a pump, i wonder how big! Sorry if this seems to nub to post or pointless but this my i bored on my day off work in progress post, plus i get so excited over this hoby shit!

here it is i think pics hard for me to post