Here's what I would have done if I were you:
Remove the stock speaker from your front drivers' side door, and put it in the rear door that was missing a speaker. Then, I would've gotten a new pair of components for the front doors. I would've used these:
Phoenix Gold RSd6cs Component Speakers
And of course, you'd need an amplifier to push them, so I would've gotten the Profile 400SX from here:
Profile
So there's 150 before shipping. Grab an amp kit from Wally World for ~20 bucks and you've got great sound for under $200.
I hear Crutchfield has a good return policy
