Bearcat, You seem to be on a steep learning curve here on pprune, so it seems like you came to the right place.
Reading between the lines, I think the details of your set F27 project are a bit thin. For instance, is your F27 a clapped out piece of s*** that has had a hard life in some aviation backwoods, or is it a VIP aircraft with low hours and no expense spared sourcing a collection of unused or expertly overhauled avionics spares that came with the aircraft? Your class colleages would be interested to know if it was fitted with low time engines and props and who completed the last major service and when.
In the absense of such information, you might need to make a formal assumption about the state of the aircraft and spares.