If you are looking to get into breeding the American Bully, I honestly don't place as much emphasis on titles as I do on health-testing. People are spending thousands of dollars on these dogs, and they aren't concerned about their health or longevity. As a result, we're seeing hip dysplasia, skin conditions, all kinds of badness. I myself am a weekend title chaser, but sometimes I feel like the most important thing I did for my breed was get my dogs in the OFA database.
On the subject of bloodlines, it is useful information for a breeder to have, but a lot of bloodline talk is simply advertisement, trying to look impressive to the newbies. People who really know APBTs and AmBullies are going to say, "That's nice, now what have you actually done
with your dogs?" The show ring can be fun and addictive, but to breed the total package, you have to do more. Weight pull, obedience, dog sports, etc. And, as previously mentioned, health-testing.
Stick around, friend. We'll load so much info into your brain you'll be wishing you could stick a flash drive into your ear.