Thanks for all of your help so far!

I may change the YYZ to YUL then, and swap the order of travel in the US a little-If I travel as I've planned in the DONE4, I could fly form LHR-SFO, and then to JFK, getting the extra miles in.

Here is rought plan for the DONE4:

cmb-bkk-lhr-dxb-lhr-ist-lhr-yzr-jfk-dfw-sfo-mia-jfk-syd-akl-mel-per-nrt-hkg-sin-cmb

I've swapped CAI for DXB in this, but they would be interchangeable right?
I think that this fits all of the rules, and it should be over 55000miles- earning us over 120,000 as AAPLAT.
CMB-BKK=CX
BKK-LHR=QF/BA, I would prefer QF, what do others think? Or would we be better transiting HKG and using CX- I do love the lounge, and CX have been good to us. Out of my last 8 legs with CX in Asia, I have been upgraded 6 times~
LHR-DXB(or CAI)-LHR-IST-LHR-YZR=BA
YZR-JFK=CX888 (is this allowed?)
JFK-DFW-SFO-MIA-JFK=AA (use upgrade stickers to up D-F on 3 class flights)
JFK-SYD-AKL-MEL-PER-NRT=QF
NRT-HKG-SIN-CMB=CX

If CX888 isn't allowed, then I fly BA LHR-YUL, then AA YUL-SFO(via DFW), and cut out the JFK-DFW leg.

I know there is a lot of information! I appreciate all of your help