Can you gurus out there give me an idea if this would be a valid routing and within the rules of the OWE ticket?

CAI-LHR (BA) (Stopover), LHR-DXB (BA) (Stopover), DXB-LHR (BA) (Stopover), LHR-LAX (BA), LAX-SFO (AA) (Stopover), SFO-LAX (AA), LAX-JFK (AA) (Stopover), JFK-MCO (AA) (Stopover), MCO-ORD (AA) (Stopover), ORD-LAX (AA), LAX-SYD (QF) (Stopover), SYD-PER (QF) (Stopover), PER-MEL (QF) (Stopover), MEL-AKL (QF) (Stopover), AKL-MEL (QF), MEL-SIN (BA) (Stopover), SIN-HKG (CX) (Stopover), HKG-SIN (CX), SIN-LHR (BA) (stopover), LHR-CAI (BA) (Stopover)

Will probably be a year or so before Mrs Efin and I could manage this (by which time, knowing our luck, something will have changed in the OW alliance), but i'd be interested in knowing the validity of this routing?