Welcome back Dudley,
i did just what you're getting ready to do on my .90 BUSA Eindecker (also converted it to an EIV). Yes, it is a bit tail heavy built as stock.
If if I can help, please let me know. Here's a link to more pics. Construction images on last page.
http://s39.photobucket.com/user/mbea...y/Fokker%20EIV