Chance of passing Secret, TSC/SCI with CI poly

Hello everyone, I wanna pursue a IT job in military, I’m a natural-born U.S. citizen who was born in China. I lived in China for the first 13 years of my life, never went back again personally, my mom is a green card holder with Chinese passport, I also have extended family in China on my mom’s side. My dad travels back to China for work some months of the year. I would love know my chance with passing the either the secret or TSC/SCI with CI poly, whether or not waiting for my mom to get her citizenship status (She’d be able to apply for it this October) would improve my odds significantly. Thanks in advance.