Welcome to redline ownership! The car looks clean, and I'm kind of digging how the Saab wheels look on the car.
I would have to say gun for a stage 3 kit, and tune (Hp tuners going to eat a lot of that budget). Check if your intercooler pump is working (plenty of guides online) and replace if needed.
Then spend the rest with supporting mods and refreshing the car (spark plugs, oil change, fuel filter etc), option b kit, dual-pass, etc zzp and these forums have some great build guidelines.
The other guy said it best as far as how to spend that $1000 , gotta make sure that intercooler pump is working. I would also throw in small stuff like that missing window trim and removing the pinstripe. This is my silver 2006 with pinstripe removed. Mine said "redline" instead of "Ion" in the pinstripe on the rear quarter panel. Well to be completely honest it said "edline" because the R came off over time...lol
You can find pretty easily by goggle... ebay has them, I just looked before replied. That part along with several other body parts are the same on the regular coupe and the redline. I'm referring to the black plastic rectangular piece just behind the door glass. Just clarifying so we are talking about the same piece.
I use to be like that too with ebay but there are alot of legitimate sellers on there. Just make sure you vet the seller before you buy anything and you will be good. Usually ebay will take care of you if you do get burned.