If you're asking about a certain layout I'd say it's the one she currently has. She'll concentrate on the 3A now and I think she'll be able to land them at the Olympics. It will be easier for Mao to land an underrotated 3A-2T than a 3F-3L. Apart from this, she has to focus on the 3F-2L-2L as it's her second highest scoring jumping pass if rotated.
Some could make a case for her to replace a 3S with the 3Lz, because even though she always will get and edge call, she actually rarely missed the jump while she often doubles the salchow or has other troubles with it. I still think a salchow is better, but I could see the point here.
The best thing is that she's not THAT far from doing it as some people claim. I could easily see her doing 6 out of 7 jumping passes perfectly. But well, I agree, I'm a bit biased, so the last thing I said is very subjective.