It did take all of about 50 days to get the interview. Our interview was very painless and lasted about 2 hours as TBM spent a lot of time putting everything together and making sure that everything was ready. Our inspector was very impressed and she even said we made he job too easy and that all she had to do was write the report and submit to her supervisor for final. When we submitted our application, we also supplied all supporting documentation. We spent 90% of the time going over how to fill out the forms and different scenarios.
If you have specific questions, feel free to ask or send me a PM.