What kind of website is it that you are creating? The personal license is only right for very restricted use cases, anyway.
But apart from that, all lKirby 2 Pro licenses bought after October 2017 qualify for a free upgrade to Kirby 3. But if you are curious about what Kirby 3 is going to be like and want to support the process, then the Kirby 3 Pro License and Fellowship Package is of course the ideal solution.