Who Are These Legionnaires?

I've been working on my Legion index, and I need some help. Here's a panel from Adventure #353, the Death of Ferro Lad story:

I'm trying to identify the Legionnaires pictured. Here's a closer view (click to embiggen):

 The first two rows are easy: Brainiac 5 and Invisible Kid in the first row; Cosmic Boy, Superboy, Saturn Girl, and Princess Projectra in the second. It's those next two rows that are giving me some problems.

Here's a version with identifying numbers to the right of each figure:

#1 is pretty clearly Mon-El, and #6 is Colossal Boy.

#7 and #8 look like girls. The possibilities are: Dream Girl, Duo Damsel, Light Lass, Phantom Girl, Shrinking Violet, and Supergirl. #7 looks like Violet. #8 seems to have a cape, which means either Duo Damsel, Phantom Girl, or Supergirl...to me she looks most like Duo Damsel.

That leaves #2, #3, #4, and #5. The possible boys are Bouncing Boy, Chameleon Boy, Element Lad, Karate Kid, Lightning Lad, Matter-Eater Lad, Star Boy, Sun Boy, and Ultra Boy. We can eliminate Bouncing Boy on body shape. #5 has a distinctive collar that only Sun  Boy and Invisible Kid have; since Invisible Kid is in the first row, #5 must be Sun Boy.

. #3 has a cape, which means it's either Lightning Lad or Star Boy. I'm going back and forth between the two, but leaning toward Lightning Lad (Thom has brown hair, about like Invisible Kid's: look how Invisible Kid's hair is darkened but #3's isn't.)

#2 is either Chameleon Boy, Element Lad, Karate Kid, or Matter-Eater Lad. He's clearly not Chameleon Boy or Karate Kid; M-E Lad has dark hair and it looks like #2 doesn't, so I'm inclined to go with Element Lad.

That leaves #4 as Chameleon Boy, Karate Kid, or Matter-Eater Lad (or possibly Star Boy, but I'm having trouble believing that #4 has a cape.) I want it to be Chameleon Boy: he appeared in the previous panel, so we know he's there. But there is no hint of antennae, and this figure seems to have hair. Cham has those funny sticky-out shoulder-things, but they could be obscured by the word balloon on one side and Lurornu's head on the other. And those two tiny lines just over Luornu's right shoulder might be meant to indicate part of Cham's costume.

I want to say we can leave out Karate Kid, based on the the hint of a collar around #4's neck. But we can also rule out Matter-Eater Lad because #4 has light hair and Tenzil's hair is dark.

So it's either Cham (without antennae and with a mistaken hint of hair) or Matter-Eater Lad (without his hair colored in).

So what do you think, loyal readers? Who's who in this picture?

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