Thanks guys! lots of good suggestions

I priced LHR-IST-DOH-SIN-MEL one way at 150k avios one way + 310 in TFS, no saving in avios vs pricing directly, but you save about 300£ in TFS one way I think it's alright but not that tempting

I'm leaning towards PE return to HKG or SIN, then UUA into CW, straight redemption from HKG or SIN to MEL (SIN-MEL works out cheaper), it's about 1K return + 184k avios? (Not counting avios earned for PE + TPs)