She is B/B is that good or should I be looking for a different breed of one?

Caught 3 two rares and a uncommon he is so cute

I am currently trying to get all the pets use to farm the battle masters I found on wow pet guide website I will read all these thanks so much guys!

Is there any where to read up on it? so many questions lol so if a pet is s/p does the order matter at all? so is a s/p better or worse than a p/s? I have just been farming all the rares I can working on my zookeeper achieve but want to make sure that I am not throwing away any ones with good stats.

Does it matter what breed they are? Is there a preferred breed for battling? Thanks I am new to all of this but totally hooke.