Well you have two very good things going for you. High mileage balances & 6+ months until desired travel.
Your options are rather wide open if you're willing to use those points. Personally I'd do SFO-LAX-Europe on LX followed by LH/SQ/OZ to Asia and then if possible CX home. It comes down to what interests you and what availability you have.

If you do choose to do Australia I'd recommending hopping over to NZ while you're there & using EK for at least one of the segments in F for that short 4 hour F class experience with a shower in the air. It's a novelty but if you don't travel internationally much it's a nice bucket list item to check off.