I would say slim to none. On top of that your credit rating on The Internet Truckstop will be listed as "NONE" for one year. Most of us will not haul a load for any broker without an "A" rating. If you did get some loads from shippers you may not be able to get a truck to take them then the shipper will throw you out for not moving their loads.
I have worked with new brokers. They list their loads as payed in full via Comcheck when the load is delivered.
Being a broker is the hottest thing on the scam market. They have about 60 days to rack up a huge amount of money from shippers before anyone stops them then they walk away with an enormous chunk of change.