When I got my first BP he was only 4 months old. The breeder just got back from vacation before he shipped the snake. So, when I got him it was 2 weeks since he last ate. So the breeder told me to offer him food right away. He ate the 2nd day I had him. Like other have said, there is no harm in offering food sooner. However, I would feed in his enclosure. He is already in a new place, so moving him around will probably lower the chance of him taking food and increase the chance of a regurgitation if he does take the food.
My opinion on feeding location is always feed in their normal enclosure. I don't believe they develop any tank aggression. When you offer food it is pretty obvious when they snap out of pet rock mode and into feeding mode. If their is no rodent smell, there is no food/"tank aggression". Unless you just have a generally defensive BP. Which a defensive BP wont be cured by feeding in a different enclosure.