I am concerned that you are asking for help with such a critical item on a free public forum on behalf of a client. If I were you, and you do client work often, I would sub-contract the help of some qualified folks this time to 1) get your client a quality product which it seems they may not get, and 2) learn what it takes to develop a proper DR/BC plan from qualified professionals who have done it before. You'll never be sorry you spent the money or time to learn how to do things properly from the start and you'll know you are doing the best by your clients. Send me a PM if you want to know more.
There are no special teachers of virtue, because virtue is taught by the whole community. --Plato