Ok, that narrows it down. You want your own C-8 contractors license number.
Piece of cake. If you can show 4 years of experience in the C-8 trade and have someone certify (sign off) to that experience you're all set.
No, your father can't certify you because he holds the C-29. If he held the C-8 or a B he could. For certifiers you could use another journeyman, business associate, or employer or a C-8 or B.
Submit your app and in about 6 weeks you'll be sitting for your exams.
Let me know if I can help you in any way.