And congratulations on your choice and your work plans.
It seems like the path you've chosen is similar to that of many of the rest of us.
I've put off buying my first Tormach until I get out of school in October. I wanted to take at least one formal CNC class before taking the plunge and buying a CNC mill. I too chose the 770. Mainly because I don't have the room for anything bigger and because my informal research into other mills in the same general size lead me to the Tormach brand.
Best of luck to you.