Yes, you are in one of the best position.
They already knew you.
You already knew the project.
Most important is: They like you.
In this case, you discuss with them first, tell them how can they kep you in this position. Then, they will extend you a offer if you are not 狮子大张口...
好好把握机会,务必把offer拿到,务必把价钱要足!