hello there -
not an aussie, but i do use sand in my planted tank
i just use regular "play sand." it's probably about the cheapest sand you can get, and it works well for me.
i have mine about 2 inches deep, and it works for me.
not sure what the wire coathanger trick is though...
as far as cleaning, i think it's a lot easier than gravel. just hover the gravel cleaner above the sand, and the nasties come up, but the sand stays (as long as you're not too close). if you're doing heavily planted (don't know if you are or not, the plant roots will take care of that problem (i believe) another alternative ist he MTS that gunnie mentioned.
lights depend on the plants you use, same for fertilizers.
www.plantgeek.net is a good resource for planted tank questions