First, congrats on the Masters!
That 770 is great, and since you're currently also working, I doubt getting a loan would be a problem. Still it would be good to talk to a bank or loan company to be sure the financing is a go.
I doubt anyone knows for sure, but I would think putting an order in now probably wouldn't get you a car until maybe July, but more likely August or September. Of course it depends on what order you would be out of the dealer's total allotment (through Q3). There just aren't any guarantees. Good luck!