Welcome to flyertalk. With the vague parameters you've given, there are thousands of possibilities. Award availability and pricing is constantly changing, and no one can predict what will be available 8 months from now when you can actually book for summer 2026 and at what prices.
There are also no secrets - the available flights are those available when you search with a given mileage program. Everyone wants nonstop business class on Singapore Airlines. Whether 3 seats will be available on the days you want no one can speculate.
There are services you can pay to craft a trip like this, as well as sites like Pointsyeah and Awardtool