What Will It Cost For Unlimited Everything For The New Iphone 3gs Per Month

Ok, I've been hearing different things from everyone about this new monthly rate for the new iphone 3gs. I'd like the get the iphone 3gs 32gb which is $300 I want unlimited texting which I hear is $20 and I want unlimited data which is I hear $30 the activation fee I hear is $18 So.. excluding the new phone price and the activation fee, how much would the normal monthly fee be with those requirements?