I did the course about 9 years ago now, before the Cert IV TAE was a requirement for part 142 schools - so it was not included, although we did study the FAA Instructor Handbook for PMI. We did an RPL for the Cert IV when it became a requirement, which was an absolute waste of time. Do you get the cert IV from the course, or just the TAE modules?
The actual instructor component I really enjoyed - although I got sick of doing the same briefs over and over (not as much as the instructors teaching the course who hear the same briefs every 3-4 weeks). We were flying 6 days a week to get through it as well, which was good for consistency. Hopefully when you get flying its worth it!