a little cool for redclaw.. i just got a marmokreb (came free with a scud order) from aquabid, but i'm not real familiar with them yet..her tank is at 70f
try local bait shops in the spring..i got a few dozen papershell crays for 3.50/doz from the bait shop by my house.. or look for local pond stockers/owners.. you could probably borrow/set a trap if you know anyone with a pond..
i've seen a couple places that will ship.. lmk