[fallen]

I would push here mainly because there's no guarantee that CO won't double up. Also I've noticed some players will fold until they are literally all-in on the blind so you can't be sure he'll go all-in on the next hand.
Depending on the type of player BB is he may not call here. He's in a good position chip wise & if he doubles you up now with a rubbish hand he's made you alot stronger & himself alot weaker.

***Disclaimer***
I'm just as new as you I would think so my advice is probably not worth that much yet.