Dormer or different wall heights?

[Jambruins 0]

I am designing a house similar to the attached picture.  There will be 5' knee walls on the 2nd floor and then rafters with a 12:12 pitch.  Howerver, the owner would like a full 8' tall wall height in the middle of the 2nd story (see attached picture where three windows are).  Would I do this with a dormer (floating or regular dormer) or would I create a room and use an 8' wall height? 

[solver 1636]

 

Watch on YouTube: https://www.youtube.com/watch?v=5wxp_PVKacQ&list=PL2B3hmDXZZU9trx_iOaec08lhAhg68ctx

 

 

 

 

 

 

[Jambruins 0]

thank you