As the Engine is a Rolls-Royce AE3007C1 I would find out if it had originally been enrolled on the R/R Totalcare program. I am not familiar with it but you might find it was put on the program at delivery and some money already paid in. However, and again I don't know, but would expect the rate per hour to be much (a lot!) higher than JSSI.
Sorry no specifics
Mike Echo