It looks really good.
A few minor points..
If the grass grows up, the black ants can climb onto the stand. They generally are not much of a problem, though some varieties, such as meat ants, can bother bee hives. You'd have to visit the site fairly regularly or put something down to suppress the grass.
If cane toads decide they like the Sydney clime, your bees will all be gobbled up at that height. Hopefully the few you have there will move back to Queensland, because we don't like anyone taking our cane toads.
Some white ants will build mounds that reach up to what they eat. It happened in the saddle shed here and though the horse ropes were hanging off the ground, they built a mound and ate the good ropes.
We have special wildlife in QLD.