I'm pretty sure JaKhu (B&G Macaw) would chew right thru game farm netting. So far she's destroyed every toy she's had, including bending heavy metal chain links open. If it were me I'd opt for stainless steel mesh wire. Even then I'd think a macaw would be able to bend it.
This site has rolls of SS wire mesh you could fashion into an aviary to start:
Buy Stainless Steel Welded Wire Mesh Panels Online, SS Welded Wire Mesh Rolls For Sale You might be able to find it cheaper doing a search of the product on line. Depends on your location.
Your best option for a permanent aviary is powder coated heavy gauge wire (ours is 8g) with a lockable door/entrance. They aren't cheap, but so worth it. We had one custom made 18 years ago & shipped to PA from CA. Cost us around $5000.00, not counting the roof & footer. It's 12' long x 6' wide x 7.5' tall. It gets used every spring-summer. We take our birds outside every day, weather permitting, & bring them in before dark. The usually get an average of 6-8 hours outside. We added a angled metal roof to block full sun, rain, etc. We had a cement footer poured (sticks up about 4-5 inches above the ground) & set the aviary on the footer, then fastened it to the footer. We let the grass floor, so they can get down & walk in the grass or dig in the dirt. They love it. Sadly the business we got it from is closed (owner retired), but there are other companies that make similar aviaries.
Here's our aviary before we had the cement footer poured & changed the plastic roof to metal roof. We added a lot more perches, swings, toys, etc. There are 4 water dishes, but no food dishes. They get fed before going outside. I don't feed them outside due to it attracting bees. My macaw got stung & had to be rushed to the vet for a shot. Photos were taken right after we got it assembled. In spring we put all the perches, toys, etc. in & take it all back out at the end of summer.
Whatever you choose to do your birds will not only benefit from being outside they will love it.