I agree with Travis. If you don't clear coat the decals they'll tend to curl up at the edges over time, or worse!, and look pretty shi**y. Shouldn't be a big job since you've already got it up on jack stands. A coat or two should do the trick. You'll not regret it. OH.. and you did the right thing with getting the Porsche stickers instead of Brembo... IMNSHO!!!
BTW.. They look great. Looking forward to seeing the finished product.
Bob