Hey Redey
I should probably point out that an 80w CFL is nowhere near the equivalent of a 250w HID. (with or without reflector) Saying that, the bulb will do for growing, but if you'regoing for a reflector and cfl combo, i'd probably go for a bigger cfl.
Something like this
you can still get as close as a couple of inches (even if you went for a 250w version) - you can get blue for veg, and red for flowering. You "could" use red start to finish or even a dual spectrum.
I see the shop you posted doesnt have them, but they're pretty standard i think -there should be somewhere is Aus that sells them!
As far as intake fans, I wouldn't bother with a cab of that size - i've had one and no matter how many computer fans i used for intake - it made next to no difference in heat.
What you want is really decent out take fan connected to a hole in the top, and a hole in the bottom for a "passive intake".
You could use those 2 computer fans - in fact they'll come in really handy! One for blowing across the bulb, and one for blowing across the tops of the plant. That will make the plant strong and keep the cab cooler.
If security is an issue, i'd be prioritizing my out take fan and carbon filter, then worry about the light.
Don't forget to budget for a PH pen (digital - not the paper or liquid testers), it's more than important!
Just my thoughts - hope this helps.
All the best!
Blue ^_^
I should probably point out that an 80w CFL is nowhere near the equivalent of a 250w HID. (with or without reflector) Saying that, the bulb will do for growing, but if you'regoing for a reflector and cfl combo, i'd probably go for a bigger cfl.
Something like this

you can still get as close as a couple of inches (even if you went for a 250w version) - you can get blue for veg, and red for flowering. You "could" use red start to finish or even a dual spectrum.
I see the shop you posted doesnt have them, but they're pretty standard i think -there should be somewhere is Aus that sells them!
As far as intake fans, I wouldn't bother with a cab of that size - i've had one and no matter how many computer fans i used for intake - it made next to no difference in heat.
What you want is really decent out take fan connected to a hole in the top, and a hole in the bottom for a "passive intake".
You could use those 2 computer fans - in fact they'll come in really handy! One for blowing across the bulb, and one for blowing across the tops of the plant. That will make the plant strong and keep the cab cooler.
If security is an issue, i'd be prioritizing my out take fan and carbon filter, then worry about the light.
Don't forget to budget for a PH pen (digital - not the paper or liquid testers), it's more than important!
Just my thoughts - hope this helps.
All the best!
Blue ^_^