Newbie: WEEB grounding nuts

Hi All!

I'm a DIY'er with a little too much enthusiasm and too little competency.
I've put up 12 panels on a wood frame using a rail kit from (I think) Unirac and am at the last stage: grounding the array.
I was sent 4 WEEB nuts but I am not convinced they will provide adequate grounding. I'd like to ground the panels together, and then ground a couple panels to rails and ground the rails to my ground rod.

Does this make sense ?
Photos provided to show what I have. The electronics are SolarEdge optimizers that are bolted on to PV frames. I'd also like opinions whether that is enough or if I should have WEEBs digging into the frames.

Thanks!

Photos: https://goo.gl/photos/o28M1JXt2GdAjeU36




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