There is a genetic reason males are more expensive. They are harder to produce. Taking what was said directly from Kevins mouth, Females can produce males and females, the first males produced mostly females with the extremely rare male. The rare male produced by the first male produced would produce primarily males.
And to the original question, If I was dropping 12k on a single breeding project it would be desert ghost, GHI, Spark male and yb combo females.
I could drop 12k on investment bps relatively easy, lol