There is an older mod called "Magic Box" which allows you to cut an area of the minecraft world and paste it elsewhere in game and on the fly. I have spoken with the original modder and he states that it would have to be a complete rewrite. I am willing to pay a modder to either update the code to 1.4.7 forge compatible or create a new one from scratch. I hope this post isnt against any rules, please contact me via message or in this thread if you are able to help. I would pay by paypal.
Looking to hire a modder