3” reflux Coil or Dephlegmator?

[Gonzo_distills]

I recently located a pile of demolished pipes from the water chiller system at work and found myself in possession of a pile of K type 3 inch pipe. After a good cleaning and polish I’m going to mimic my 2” set up. Two 24” sections with ferrules for the primary column. From there I’m thinking of changing to an inline dephlegmator instead of my tee with a coil.

Do I get a tee and and find a 3”coil like I run on the 2” set up or do I transition to a dephlegmator on the larger diameter column?

If I order the dephlegmator should I add a sight glass until I get used to it or will I be able to feel it out the same way I do now with my coil? Adjusting flow instead of coil height makes sense to me.

What do y’all think?