The right bike for me?

[KiWiP]

If you're looking at getting a bike to get your full and are then going to get a bigger bike once you have your full why do you care what it is? Any 250 in good mechanical order will go over the speed limit so think what else can you do with it. Go off road? look cool outside the local, scare your self shitless? If it's not going to be a keeper don't worry about it get something cheap (though safe) and get your full and move on.

You mention power. Learn how to ride first then you will know what power you need.

[Sable]

I think what you need is one of these