I think the shipping charges might end up being too much because of the weight. Sprayers, netpots, etc... would be a better option.
StinkBuddies.com
A six months supply of all nutes necessary to support three flower units packed in one box to minimize shipping costs with a reasonable margin may be close enough to the retail at my local hydro hut that, being in a non MJ friendly state, the security of dealing with you may offset any difference in pricing if there is any.