Achieve the sound?
 

I play in a band that is a Pop-Core band (not even sure if that's a genre, but that's the best way to describe the sound) and I am looking to achieve a bass tone similar to Four Year Strong, A Day To Remember, New Found Glory ect....

I am currently playing a Ampeg b26 and a Sterling bass, however I have a sansamp rbi and crown xls1500 on the way.

I was wonder what setting would be good to get this sound?

Your gonna just have to play it and use your ears. There wont be a magical setting that works all the time.

In bands like that it seems the bass is a pretty standard cleanish scooped tone with some Sans Amp Springiness. So your setup will probably achieve it easily enough.