I sent a long post to you and it didn't post for what ever reason, doh! Well what system or method are you trying to use and why? Roots have anchor, tap and feeders when you say you want to let them grow for whatever reason then you may rethink that because you don't want to stress them with a educated plan IMO. You could throw a home made bubbler together to take care of them until your stuff arrives for under $50, or you could just throw them in a soilless mix like ProMix right now.
Sorry, I spent so much time on the original post that I sent that I don't have as much time right now.
Adieu