If you try to pick the next big thing, you are 99.9% likely to...

If you try to pick the next big thing, you are 99.9% likely to lose the lot if investing on a set and forget basis.

I would put it all into the listed invested company Australian Foundation (AFI), which has been a consistent outperformer over a much longer period than 30 years. Or maybe their stablemate Djerriwarrh (DJW), which has a slightly higher risk profile but pays a better dividend to compensate.