You might want to make a few phone calls for insurance mine was cheaper than that for first year authority. You also might want to factor in a few overweight tickets, something I'm learning first hand about.
If you're going to run the north east a lot you'll need more toll money, MD just raised all the tolls, Harbor tunnel just went from $8 to $12.
I don't want to sound harsh but I wouldn't touch those numbers with a ten foot pole. I also wouldn't try to start off just running load boards, I've read on another board where people are seeing .73 a mile and someone posted .20 a mile.
Try to network a little and make a connection with a reputable broker that will work with you, they are out there. It will take some of the pressure off of you starting out.