David, glad to hear you overcome the problems with initial steps. And thanks a lot for your feed back, if you feel something should be worked on directly please open a jira for it that way we can work on it as it's known issue.
Moreover good luck with PoC and post any questions or comments here throughout your journey with jBPM, we are more than interested to see success stories here (or input on how we can make it easier and more efficient to move to jBPM)
Cheers