I suggest you do a full case study, as outlined in the sticky. It doesn't make sense that you are bringing in 8k, spending 5k and have no savings. 3k seems a bit excessive for taxes in your case.
On paper, early retirement is easy: know your expenses and save enough to cover those expenses.
What precisely you should do depends on a number of factors.
It looks like you still owe the shiny new MSRP on the 4runner, so you are probably underwater on that (owe more than you could sell it for). But what is your interest rate?
Do you plan to save for the kids' education?
Is the military disability inflation adjusted or will it always be 2k?
Does the salaried employee have access to a 401k or similar plan?
