Fewest Eve Ascent Stages

[skykooler]

It's pretty well-known that a single-stage Eve ascent to orbit is impossible with stock parts. Most Eve landers I've seen have 10 or more stages. With this in mind - with how few stages can you reach Eve orbit?

Rules:

• This challenge is only about the ascent - you can use Hyperedit or Extraplenetary Launchpads to get your ship out there in the first place.
  
• Stock parts only.
  
• Mechjeb is allowed, but it counts as one extra stage.
  
• Stages are counted by the number of times you decouple a part of your ship. All boosters that decouple at the same time are part of the same stage. If you have multiple engines one of which is activated after another, they are still the same stage as long as nothing is decoupled.
  
• Scoring is determined by the number of stages used to reach Eve orbit (periapsis outside of the atmosphere). In the event of a tie, the launch from the lowest altitude wins.
  
• In the "crewed" category, you can't use the Kerbal's jetpack - some part of the ship itself must make it into orbit.
  
• There are separate categories for FAR and stock, and crewed and non-crewed.
  

Winners:

Stock:

Crewed:

Non-crewed:

FAR:

Crewed:

Non-crewed: