Start with your NZ low flying Regs explanation, in resp. of height AGL, distance off dwellings, what's VMC, etc. Cover your bum - first and foremost!
Next should be the Emergency procedures, eg engine failure,part/full, then loss of forward visibility responses, then collision responses. Include preventive actions such as carby heat, bring in hi and low scan techniques.........
Look at your met aspects, eg turbulence, wind shear, visibilities etc........
Look at your terrain aspects, incl valley decisions, crossing ridges,where you'll expect lift/no lift etc.
Bring in a/c performance + pilot health/wellbeing later
I know it's "eyes outside' all the way, but you still have to teach use of GPS to assist in off track/abeam idents. It's also very instructive in respect of the effect of rough air on GS.
cheers,