Your engine braking will only contribute several dozen horsepower, since it's just drivetrain loss and vacuum pulling from the throttle body causing the drag.

Even on a typical Toyota Camry, its brakes are capable of over 1500 hp of braking power. The brakes will easily overpower the maximum traction of your tires, which is when ABS kicks in and keeps the brakes at maximum braking power (because sliding friction is lower than static friction, ABS helps to minimize tire slipping).

So just push the clutch in, slam the brakes, and let your car do its thing.