Wish I could use the QF points to upgrade to business for the CX fare![]()
It is a lottery even upgrading QF flights

Anyway I've spotted a cheaper option for you - it does mean wasting points.
There are some very cheap fares on JQ to SIN and HKG. Taking advantage of these:
$1400 for 2 adults, 1 child, 1 infant PER - HKG 18/6 HKG-PER 30/7
Then use points for all 4 of you HKG SFO on the 20th. Total points 150,000, taxes 3804 HKD = AUD600
Then use points for 3 of you (less 1 adult) on the 29th of July YVR->HKG. 100,000 points, CAD370
And buy one cash fare at CAD 852 YVR->HKGl
Total Cash
JQ PER HKG RTN AUD1400
CX reward taxes 1 AUD600
CX reward taxes 2 AUD380
CX cash fare AUD870
Cash total: $3300. Points burn 250,000
Personally I'd prefer the cash fare with CX.