Booked sfo to hkg using avios on CX. Wife wants to go to Japan now 3/27-3/31, so we'll go from hkg to japan and then back to hkg.

I'd like to use avios but have 200k United miles as well. There are 4 of us flying. I checked out the BA points requirement and it's around 10,000 in economy. Any advice or tip as to which airline to try to book with and if it's really 10k miles?

BA did not have direct flights and a connection through pvc is liek 35k miles.
How best to book this flight and with which airline? Availability good or bad during that week? It's easter week so it might be bad.. assuming people travel that week in asia.