New house this year has a pretty big driveway (40'x40' parking area + 160' of road that's all 3/8" blue stone and fairly flat.

Do you think a good two stage blower will be able to clear this or will I just be moving stone from the driveway into the yard? Neighbor has a bucket loader I can borrow but I don't want to be totally dependent on someone else.

You can do what I do with my gravel driveway- set the height gauges on either side of the auger so you leave about 3/4" of snow which should leave the stones untouched.
Ron