Firstly, Congratulations!
I didn't receive any notice of funding in my acceptance letter and neither was I notified by the program/department. That's awesome you are receiving a scholarship though and I would definitely pursue RA and TA positions if they're available...In my application, I also put "No" to the question about considering a masters as I too have one already (in Education and Human Development).
It seems you have a lot to contemplate given the scholarship, the possibility of an assistantship, credit transfer, and your eagerness to get started. To be completely honest, I had already accepted another offer for a PhD prior to receiving the acceptance letter from TC so it wasn't even worth considering. I also did not want to hold up any wait listed applicants (if TC/Meas. and Stats program even has one).
There's a whole other section on making a decision in this forum. Definitely look into that if you haven't already. Good luck!