Cargo Bikes

Hi Cargoculters!
We are moving to the suburbs soon and will have a garage. So time to get serious about a cargo bike!

Requirements

• Must fit kids x 2 (3yr + 3 months) and a trip to the supermarket
  
• Riders are 5'3" and 5'10"
  
• Electric assist required due to load+hills combo
  
• Purpose is general family + shopping stuff
  
  

We're thinking probably a 2 wheeler with box in front and are liking the Babboe City Mountain, but we've only just started looking.

Budget can go fairly high due to improved bike-to-work scheme, but ideally <4k£ including seats+rain cover.

I'd appreciate the hive mind's thoughts!