The only specialty tool you'll need is a torx bit to remove the MAF sensor, pick up a cheap set at Harbor Freight.
My advice is follow the directions in reverse. Assemble the CAI first, then remove the stock parts, then install the new CAI into the car. I built the Steeda CAI in the comfort of my dining room, then took it out to the garage to finish the project. Don't believe those that say less than 30 minutes or you're doing it wrong, it takes longer. I've done a bunch of this type of stuff and this one took about 1 hour, taking my time. Now that the Steeda CAI is built, I can swap it out for the factory box in 15 minutes or less.
Other tip is make sure the plastic air tube Steeda sent you is butted up flush to the aluminum velocity stack before you snug it down. If it isn't you can get turbulence in the air stream giving the MAF strange readings and this will affect how the car idles and runs.
Also, you can search the web and find a couple of "how to" videos on the Steeda CAI that are way better than the provided instructions.
One other thing, make sure you have their tune loaded before you even think of starting the car.