Hi Clinton, as C of R holder you direct your maintenance provider as to what maintenance you want carried out. If your provider is willing for you to sign a waiver saying that you do not want certain parts carried out then that should suffice. However you may need test cases and ultimately you would wear the can. An engineer is guided by the aircraft system of maintenance.
What areas are you talking about.
I understand one Jandakot maintenance org is paying $12000 per month rates so thats a lot of outlay before you even start on wages etc.