Welcome to the world of bogs!
There are alot of considerations that you should look at before getting your hands mucky! One thing I would recommend is if it is possible is to visit one of the natural bog areas near you. Here is a link that provides some locations:
Australian Peatlands

To have your own bog in a tub the main consideration is location of the tub. If you are going for a live Sphagnum bog then you need a nice sunny spot that is cool! Or a partially sunny spot that is cool. While the moss can handle some heat daily cooling is best, even if only at night. The only offset to natural cooling temperatures is by either spraying the surface of the bog at regular intervals during the day (this can be done with a timer and misting system set up) or by having the bog in a tub that has one portion of the rim lower than the top of the tub so that water can be flooded into the bog and washes out to be captured in a recycling tank and then repumped back over the bog (the water can be recharged with cooler water during this cycle-some Disa growers actually run water coils into a freezer to cool the water and repump!).

If you are wishing to grow only Drosera and VFT then you need to know more about each of the species/hybrids that you may be growing. What this would mean is that you should have areas of the bog that are higher up and not covered by moss, perhaps using a large pot sunk half way down into the bog into which you put a mix of sand and milled peat moss that you can plant VFTs in and some of the Drosera species. Some Drosera do grow with Sphagnum so these can be planted into your bog.
You may also want to try other plants as well but avoid sedges or anything that is large and that spreads rapidly.
For what my experiences have been check the link below.

Here is a link that might be useful: Bog gardening

Thanks terrestrial man!
Thats given me alot to think on, so will do more research before jumping in.
Thanks for the links, real helpful!

Bunks