Aw, hey there. I'm so sorry that you might end up rehoming them.
That's got to be a hard thing to do.
Anyways, I would highly suggest doing the rehoming yourself. Just like everyone else has already pretty much said, they will have a much better chance with you doing it, than if you put them in a shelter.
Is there a rescue near you? Maybe you could contact them, and get them to include your two boys in their available for adoption database, but you would be the "foster" for them.
I think rabbitsncavylove was trying to tell you that if you got them from a rescue, than you need to "return" them to that rescue.
Good luck!