flyer
My earnest advice would be to consider 2 facts about this type.
Go here, read and absorb.
The weight - and the balance - Air Facts Journal
The UK CAA when asked to certify the aircraft for their register refused to do so after some flight testing and in fact queried the original certification data, what followed is not for here but would make the plot of a ripping yarn.
IMHO the US certification should have been revoked, but that has never happened.
My guess is that whatever work the aircraft has been tasked for has been won on the basis the the aircraft can purchased for very little as a result of the aforementioned issues. Cheap as. I hope you are not the bunny "dying" for the job.
Be very careful and if you do persist a U/S SAS is a NO GO, period. If it goes U/S in flight then you will have a very interesting flight with hopefully an alive but very chastened young pilot at the end.