ooops...
lol looks like you are set already
. I should stop skimming threads.
make sure you do the referral within 14 days on each of the phones.
http://www.sprint.com/landings/refrewards/
you should be able to find a family/friend with a sprint number and use it as your referral. I don't know if you can refer yourself from your second line back to you.
and don't forget your rebates
www.sprintrebates.com