Looking for a newer AS, to replace Executive

As per the title, 
At some point in the New Year I will be looking to replace my current 1998 AS Executive with a newer model of AS.
This is a list of 'Must Haves' on my next M/home
Automatic, Air Con( cab and or habitation) !!!, Merc Sprinter Chassis Cowl,
150+hp, Captains chairs, EK layout ( suits our needs best). Around 10-12years old ???( Suits CASH Budget)
Non essential , but nice to have bits
Towbar, Awning, Low Mileage ???,
If you are thinking of selling soon, please contact.
Based in West Norfolk, but happy to travel (almost ) anywhere.