Locks that work

So I need to lock my Robin Mather outside, on the streets of London.

This is just during the workday, but still.

Before we get into it:

• There is no secure parking at my office
  
• The office has a super narrow and steep staircase, I cannot keep the bike indoors
  
• The Brompton for 18 mile each way commute is shite, I'd stop cycle commuting if I had to
  
• I was parking in the Sustrans London office but have been told I am not allowed to
  
  

So the Robin Mather is going to be locked to a lamp post, under the window in which I work... out on the street.

I'm thinking:

• Almax Immobiliser IV chain for rear wheel and frame
  
• Abloy PL362 padlock
  
• Kryptonite Fahgettaboudit Mini for front wheel
  
• Xena X66 disc alarm so I know when to look out the window
  
  

OTT much?