Yes, you can use the factory barrel and Black Bullets with no problem. That's the hot set-up. And, yes... the 147 fp is the one.
Now, if you shot Limited class with a .40, you'd have to go the aftermarket barrel route.
The factory barrel has plenty of support. I wouldn't spend the money on one for a 9mm. I've already done that for you! I bought a Bar-Sto for one of my 9's. I did several accuracy test, and it didn't matter what bullet, or weight I used. The Glock barrel out-performed the Bar-Sto every single time by a country mile. It wasn't even close.