Ben as i said not having a go at you personally Im sorry you took offence...i have done track days and corporate days in the past where we supplied the formula ford, entry fee was $150-ish ea with car supplied and catering and fuel and track hire...and that was a real race car...
Wakefield these days is a den of robbers and not that great-a-track.
My suggestion is goto a simple practice day or off street speed day at any of the tracks where the cost is $80.
Ive been to those days with a formula ford and 3 cars turned up...i did about 300-ish laps not bad bang for buck.
$150 you will do that a few times and due to lack of interest you will come up a negative in your bank balance im just trying to protect you from doing your dough...

If u made a profit this time thats great but you will get stung by the track if you do continue to do it. I applaud your organisation efforts to do this type of thing....just letting u know what you are up against....and that is cheap mid week track days where no one shows and u still pay $80.