I'm on a budget

since I just bought a new car.
All I could save from the crash was my mono amp, a two channel amp, and my optima battery.
I need some advice on what to do here.
The components need to be replaced, and match my SAX 100.2 as best I can for a decent price. Lanzar Opti6c's were my choice. I can find them for $115 before shipping.
I won't be getting a sub until the Mag's are done, so that's not a concern right now. But, I need to get a new head unit. This is my main concern, I want some functionality but I don't want to pay a premium for it. The only thing I really desire in the head unit is an aux-in or an iPod control. Even a USB-in, because I could do iPod control through that. A detailed EQ would be nice but I'm fine with using the iPod's EQ presets.
Budget is limited to at most $250 for a head unit, but I'd rather save some of that to put into sound deadening.
I feel there's enough to gain from deadening that I should not install my components until I'm ready to deaden the doors. Oh, I just remembered: there's a product out there called Speaker Tweaker or something like that. I wondered about how useful/worthwhile it is. If anyone's used it, does the window (while all the way lowered) being between it and the speaker have any adverse effect?
Any help would be appreciated.