That flight time probably wasn't a good idea since you will be pushing things. This is more true now that TSA has ratcheted up security. Both the rental car and the cruise line transfer are not a good ideas. Too much time eaten up. The realistic options are grab a taxi or reserve a private car or shuttle. Since I have personally been hosed at Port Canaveral by my private limo not showing up, I'd say just grab a cab. They do have van taxis too. It won't be cheap. $140 or so.