I used the same kit a couple of years ago: once I realised that I just needed to give it a database so that it could manage its own state and let it do its thing, it was generally a breeze.

At the time, at least, there was some weirdness with integrating with the Canadian version, however. Nothing I couldn't resolve generally, and it may very well not be a problem at all anymore.

But yes, '+1' for the QB PHP DevKit.