Since bike ship/prep is such an ordeal, why not do a bike rental at one of the easier-to-get-to Euro or Africa rallies? Your costs will be roughly the same, probably a little cheaper because youre bound to have hiccoughs the first time, going alone. You'll be paying for the convenience, but you will also use the effort to gain valuable insight from actual competitors on the ground doing it the way You want to... Plus you can concentrate on getting to the finish without a lot of logistical distractions.
Use this gained knowledge to then put together your own racing team.
"Why BMW? You like to suffer? My sister, she has five kids, no husband. You come over?"