The last time I remember Mao landing solid, ratified 3-3s was in the 2005-2006 and 2006-2007 seasons. In 05-06, she did 3f-3lo in the SP and one solo 3a in the LP, but no 3-3s in the LP. In 06-07, she did 3f-3lo in the SP and one solo 3a, a 2a-3t (which she struggled with), and a 3f-3lo in her LP. I think 06-07 was the season she had the most difficulty in her LP, but she has grown an inch or two since then and even that season she was very inconsistent in her LPs.
I think that two 3-3s and a 3a or two 3a s and a 3-3 is not going to happen for Mao. Especially because it appears that she has to stay super thin in order to rotate the 3a, but being so thin will likely take a toll on her stamina. I think one 3a and one 3-3 is more realistic for Mao, but even then I wouldn't be surprised if she had her fair share of downgrades on either or both elements. Or Mao could go back to her layout from 05-06 when she did 3a in the LP and no 3-3s, but had all her combination jumps at the end of the program to receive bonus points.