You might get more answers in the Machinery or really Precision area instead of here. 

What else do you want to move it between? You can get used JD stuff pretty cheap these days. A 2600 or 2630 screen w/ autotrac and a 3000 are cheap and reliable. An ATU300 for the steering column and away you go with a harness or two. 

Same could be said for Ag Leader or other brands too. Who do you have for parts or support in the area?