SIX HOURS? You're being stitched!
Never flown one and understand they might want you to be fully conversant with the glass cockpit but if that's the case, most of the systems can be taught on the ground.
And you DON't get a Cirrus endorsement - there is no such animal. Your licence already qualifies you to fly the aircraft ie SE < 5700kg. I can't believe schools that try this bullsh1t on.