Hi, Mike
Well, Your dxf took-for-ever to load, Reilly seemed to hang on Dup-Item's, Loaded in BobCad and saved it, seemed to load better.
I got the same size as Bill did, The put a box around it is a good Idea, I'd use 5.5 x 10.0 though, To see a comparison rite on the edges of the art work.
Post It.
Thanks Chip
Edit: Post the dxf with border