Tman, do yourself a favor....try this business out as a company driver first.
You can always make the change to O/O later, but going the other way has many pitfalls, many, many.... You are talking about jumping off a bridge with a bungee cord with no warranty and provided by the lowest bidder.
In the past couple of years there has been a literal plethora of "used trucks", many of which have been repossessed or voluntarily returned to the financier....from experienced drivers who could no longer justify the expense.
This is not to say that you cannot make a living at it as an O/O....there are guys doing well..... But consider this: Would you go out and buy a cropdusting plane and start a business before you even have a pilots license? Its the same difference.
Instead of the companies that you have listed....if you haven't already talked to these companies...please take the time to:
Gordon Transportation (GTI)
Watkins-Shepard
Interstate Distributors (IDI) with the Green "freightshakers"
To my knowledge all of them take student drivers, and all of them have good reputations. Do a search on them here and read the responses.
I would suggest CFI, where I drive, but you are not in the hiring area, so its not likely they would hire you for that reason. And you have to have a CDL prior to applying as a student.
Do yourself a favor....step back and take a deep breath, think long and hard about this, and before you make any moves financially.... consider driving for someone else and finding out if this is your "cup of tea". Statistically so many people enter this industry and quit it and leave in less than a year....its a staggering number. This industry can be a beast and it takes alot of moxie to survive. I've been at it since 1994, and I have seen many, many drivers with stars in their eyes....leave angrier than hell....or so downhearted...
Take your time....you've got lots of it. Just my opinion