Don't stress dude. A tune will make a big difference. When I first put in my old 418 it ran like CRAP with the stock tune.
I had Jerry from FordChip do my first tune; it was just okay. Then I had Keith from AZ Dyno Chip do it over again. After nearly an entire day on the dyno the tune was much better, but the T4M0 never really worked as well as I would like. The tune is definitely better with my AEM, although it has its own pitfalls that annoy me.
Once you get a good solid tune go back and get us some better numbers.
Paul.