1. Charcoal 1B peak lapel
2. mid- to light-gray 3r2 notch lapel
I agree. Neither is great, but chances are, there will not be a single person there that even notices that your charcoal suit is 1 button peak lapel. Not so for the mid/light gray suit.
There's a floating opinion that casual means less cuff being shown. I show about 1cm of cuff with my jackets, which it looks like from your one sleeve, you're good there. I would leave it all alone. Looks great.
We can't see things like the back of the neck, collar gap, lapel bowing, etc. with that angle but I'm just saying from this view, it looks good to go.