I have been accepted in the doctorate degree at a fairly good 100+ (USNEWS) ranked university and I am joining it because I have been awarded a teaching assistantshiop and so many people have suggested me in taking the opportunity in hand rather than to wait. However I still want to apply for the top 30-60 ranked universities. Because I had to register and take my GRE test late and by the time my GRE scores were received many of the universities where I would have wanted to apply had closed their deadlines. So I could apply only to few places.
So now is there a possibility of making a credit transfer from a master's program or do I need to reapply for the new university?
Also how much of a chance do I stand in being awarded an assistantship?
I have run out of ideas but I desperately want to move on to a better place. Any suggestions will be gladly accepted!