I use Switch wings. They're very cheap and very good. They don't do a 3m but the 4m and 6m are very good. They only come in one colour. I would prefer a black leading edge but it's hard to complain at the price.
You want to make sure you get the free shipping. When shipping to Australia I order things one at a time so it comes in under the tax free limit.
https://switchkites.com/products/drift-surf-wing
If I were you I would hold off buying too many wings at once. The thing about foiling is that you learn stuff and think you know what's going on, then learn more and realise that earlier thing was wrong. A 4m and 6m will cover most conditions you're likely to encounter. I am not yet convinced that small wings give you all that much more strong wind range. I suspect they're more made for light weight riders in moderate winds.
What you should consider is getting a much bigger foil, say 1900-2100cm. You'll find it much easier to get going in lighter winds and you'll get much more glide on flat water and smaller waves. You can use a big foil with a small wing in strong winds to ride wind chop. The key to perfecting gybes and foot swaps is to use the glide of the wing. A bigger wing and a push from a wave helps a lot with that.
To an extent, unless you have decent ocean swells, the wave riding aspect of wing foiling is massively overrated. I've never seen anybody glide for more than 5-10 seconds on wind chop. Wind chop can be great if there's a heap of wind and a long fetch to push up larger waves.