Thinking about buying an A7 what should I look for please?

[prismv]

Going to let my 640d go and have been looking at the CLS and a few others, I can’t afford a Panemera but the A7 looks nice.

I like to buy nearly new as the prices seem reasonable would like the 360 camera and heads up display as well as the air suspension but I think it will be hard to find all that.

Would welcome any advice from other owners
Will prob arrange a test drive next week