I can build a steel fuselage easy.I have a good TIG setup and tube notcher and worked with metal most of my working life. Cost of freight to here makes the use of steel tube stock or built up uneconomical.I have a J-3 Kitten / J-4 Sportster you can buy, where you don't have to build that steel fuselage that irritates you, but you still get the benefit of it if you need it in a crash.
I have had a good look at the Flitzer and think it would be a good project with the Verner 5 cyl radial.If you are a builder, and want to build something where what you have built is the primary reward... definitely take a look at the Flitzer Z-21 biplane from Lynn Williams in England. A magnificent and unique aircraft. It apparently also happens to fly very very nicely.
A pietenpol aircamper would be a good idea in NZ.You could use an Auto engine like a Toyota 4Y which has been done by one of your countrymen.I recall the grega aircamper version used a J3 wing.I have been looking at the J3 kitten but do not want to do a steel tube fuselage.
Would it be acceptable to use a modified ragwing RW8 fuselage and fit a J3 wooden wing to it ?