Welcome to FlyerTalk and the Cathay Pacific Asia Miles forum!
As a newbie here , let it be known that Flyertalk is not a travel agency site. We're not here to tell you where to find the best fare.. there are many other websites to do so. But as a newbie, you're forgiven... so having said that..
You may try a local asian-based travel agent who may have deals with CX. But trying to get a buiness class ticket for anything less than $6K is going to be hard these days - especially on mainline carriers like Cathay Pacific or Singapore Airlines.
Probably better to redeem your MR points to a US based programme like AA or BA as they have better redemption rates than Asiamiles.