A mortgagee (lender) retains an attorney to represented its interests in a commerical real estate deal. A mortgagor (borrower) requests a special business loan for funds to acquire a parcel of real estate and contruct a skyscraper on the parcel. the loan will be secured by a mortage on the parcel and skyscraper. The loan and mortage documents will be complicated. If they are incorrectly drafted, it could prevent the mortagagee's interest from being properly secured. the mortgagee will process the loan if the attorney drafts the loan and mortgage documents and the mortgagor pays the attorney's costs for this work. This approach is common in this situation of skyscraper development where the attorney's works. The attorney reasonably believes that he can provide both the mortgagee and mortgagor with competent and diligent representation. The yboth provide written consent to the repsentation after each having consulted with indeprendent lawyers. Is it proper for the attorney to prepare the loan and mortgage documents? Explain your answer, citing any applicable Rule(s).