'mogga' Assuming this flight is a paper one & it's a single flight to KI which is Tassy anyway then "framer's" very informative post has mentioned a plan of things to check along the lines of safety, not commercialism.
The key word here for all out there is Commercial, that & safety are hard to align in the real world of aviation at GA level. There's been many a plane end in tragedy when these two words get tangled up.
"Aussie Bob's" post although has a lot of tongue in cheek content is sadly enough all too true in some ways.
As has been mentioned here on both sides of the fence yr instructor hopefully has good intentions to bring to yr attention one way or another the traps associated with real world charter, not what's just in the Reg's
My advice is to cover ALL you can possibly think of with help from other sources (such as these posts), you'll soon figure out latter on in yr career what's important & what's not.
Wmk2