Has anyone tried to cross Boax and Lifter Before?

[llShimanoll]

Its my first grow and i tried growing 3 plants to up my chances of getting a female. Only 1 plant ended up being a female but the seeds i have are bag seeds from cbd flower i ordered online. i have 3 different strains, should i let one of the males pollinate my female? What would happen if i let both males pollinate my female? 3 way cross with each strain? Not too familiar with how genetics work.