i know that whip snakes are highly active snakes, they bask in the sun and slither around all the time. which basically means they are like tree snakes, (need feed quite offten) . i have seen a few a boy they are awsome.
a cage should be at least 70cm for 1-2 adults, but will be fine 4ft tanks.
the temprature at the middle of the tank should be around 24-28*C
they are terrestrial.
major food sauce is skinks and frogs. some people have weaned them onto mice though. i reakon feeding should be every 5-7 days.
they are EXTREMELY hardy in captivity
this species is egg laying, producing 3-9 eggs in summer following winter cooling. sex may be determind by tail shape or probing. (can't tell you tail shape as i have only been told that)
hope this can help you.
Cheers,
Luke