Vhayne,
First of all, welcome to the addiction. You've picked a great hobby to be part of. Now on to your questions. To start off with I'll tell you that your thoughts about a J-3 Cub go learn on isn't the way to go. Even though a Cub is a high wing plane like a trainer is, it is far from being a plane to learn to fly on. It has ground handling traits and some characteristics in the air that can make it a handful to fly, and not well suited to learn on. These habits don't make it a "bad" plane to fly as a Cub it actually a very fun plane to fly once you know how to fly and can handle the Cub properly, but you don't want to be learning on it.

As for a trainer. Your list does limit you somewhat as to what's going to be available for a trainer. The one that I do know of for sure is the Hobbico Superstar EP. You can find it here: [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXJKU3**&P=ML]Hobbico Superstar EP[/link] . As you indicated on your list this plane is a complete package that has almost everything you need in one box. For $249.99 you get the plane, batteries, and the radio you need. I have seen one of these before and there is a minimum of assembly required to get it in the air. There may be other trainers out there available, but electrics aren't my cup of tea and the only one I know about is the Hobbico plane that I listed. Hopefully others with more electric experience will be able to add to the list for you to choose from.

Simulators can be a great training aid when they are used in conjunction with an instructor. Please visit with an instructor and get some basics that you can start practicing on the simulator while you wait to get up on a real trainer. While simulators are great for practicing and reinforcing good flying habits, they can also help you learn bad habits too. I've had students that spent a lot of time on a simulator before they ever came to the field and it actually took longer to get them to solo because we had to "unlearn" some bad habits that they picked up from their time on a simulator. A call to your local club, a visit to your local hobby shop, or looking up a club on the [link=http://www.modelaircraft.org]AMA website [/link] will put in contact with an instructor.

Good luck and welcome to the hobby.

Hopefully this will help you out.

Ken