I used to jump all over those loads with massive deadhead because when you can bid on your own freight it opens up more options to you. That all ended the time I deadheaded from Los Angeles to Salt Lake City Utah for a load headed back to California and it cancelled. I will only deadhead for a load if it is on they way to a good area from a bad area. Like the time I deadheaded from Laredo to Alabaster Alabama over a holiday weekend to pick up a load headed to Detroit.
Also, Turtle is right about the maintenance that needs to be calculated into the rate per mile. You also need to have a vehicle replacement fund. A lot og guys "myself included" just run around all over the place making money but fail to plan for catastrophic events. I save all of my money in the bank which is why I've survived 1 Reposession, 1 Complete Engine Failure, and now some health issues. There are way too many vanners living on the edge out there. A mere transmission breakdown can just put a lot of guys out of business.
I always like to have 15 grand on hand to cover every possible scneario. Five grand for operating money (I like to have enough money to pay for fuel, food, and oil changes for an entire month before I even see one company paycheck) Five grand for breakdown (so if the tranny goes, I can just get a room and slap down 2-3 grand and get the job done) and another Five grand for vehicle replacement! If you have less than that, or have to use a credit card to cover even some of that, you are most certainly under-capitalized. I have to admit that I myself am a bit undercapitalized right now. The only thing I have going for myself is that I've replaced almost every part that can break in my van!
I think a lot of new people fall into the trap of running loads, deducting fuel, and then thinking that is the entire profit. This can also happen if you are running in a newer vehicle and quite possibly haven't had anything major go wrong becuse the truck is new, or because the 100k warrantee covers the cost of repairs. There are a lot of components that need to be replaced on a van at the 250k mile mark. There are also a lot of things that can take you off the road for 2-3 weeks at a time: a deer hit, black ice, a tire blowout, engine failure, or personal injury. There are a lot of variables in this job.
But with all that being said I have come out on the road with a van and 250 dollars 3 times in 5 years and I have built that back up to,10k in the bank one year,and 14k in the bank another year. Mind you I was very lucky that a deer hit, black ice, or component failure did not happen to m withhe first day, week, or month. But your situation might not be the same as mine! So be mindful of all of the nasty stuff that can happen to you and knock you right out of the business.