Jupiter
Passion takes you where hard work can't.
You think it would be wise to put it on the one that has the staggered cobs since the wattage is going to go up? The other one they are right next to each other.No 36,50 and 72 are the cobs you would probably want to stick with. There are hundreds of cobs available and I find more every day but these 3 voltages are your best options.
What I meant was to ditch the drivers in the k3 and just add in 2 hlg185 since you already have 1 and the other is $40. Then you could use those k3 drivers somewhere else. The k5 is another story.