I will pass on a little good fortune to you because it was passed on to me. I have some 3/0 rings that someone basically gave me for free. I will test fit them tonight on Kicker wire and if they fit, all you have to do is pay for the shipping for a few of them. Kicker wire normally takes 2/0 rings but these look about the same size as the other brand I buy.
i can sell you some 1/0 crimp terminals for cheap, let me know how many you need, they arent anything fancy, but they will work just as great as anything else