Best material/pattern for color blending

[RandomHero8913]

So I'm brainstorming a project and I could use some help with optics. What I'm thinking is a single heatsink, lets say a 140mm pin heatsink, with two opposing CCT 90+CRI COBs such as 2700k and 5700k, and two 660nm 20mm stars centered in a basic diamond formation. The most feasible route I've found for a reflector looks to be modifying a downlight reflector. As far as blending the light coming out of the reflector, I'm at a loss as to what performs the best in this situation. Any ideas?

Thanks

 

[blueleafjedi]

133mm heatsinks from cob kits has room for two (three if you want) 1212 cobs

 

[RandomHero8913]

That's awesome, thanks. Are those the blue cobs? What's the other?

 

[blueleafjedi]

two blue1212's two 3000k 1212's on 133 pin heat sinks "elg 150 35B" driver 100k dimmer

 

[Moflow]

two blue1212's two 3000k 1212's on 133 pin heat sinks "elg 150 35B" driver 100k dimmer

Hi there @blueleafjedi , nice set up.
What area are you covering?
Are the blues primarily for vegging?
Thanks

 

[blueleafjedi]

im running this in a dr60 as a veg area but i think i can use it to flower if i need to

 

[Airwalker16]

Where did you pick up Those Blue Citizens? what nm are they if I may ask?

 

[RandomHero8913]

Where did you pick up Those Blue Citizens? what nm are they if I may ask?

Cobkits has them