Hello Malek - (wow, Lebanon) - tastes are personal, but I agree with you on the Euro lights looking better than the US-spec ones. By all means get the bubble-shaped lenses. I have rarely seen the flat ones and I think they don't look as good. I would be surprised if the flat ones were supplied originally, but I could be wrong.
When I had my car repainted, I had them fill in the side marker holes (my car is originally US-spec, and was shipped back to Europe in 1990). I think the lines become a lot cleaner without them. I also removed the bumper overriders, and put small (plastic) chrome antenna caps to mask the holes in the bumpers. Unless you look hard you don't notice them. When it comes time to have the bumpers rechromed, I will have the holes filled in but, for now, I like the solution I came up with.
The attachment did not come through, could you try posting it again please? I'm very curious to see what it looks like.
Cees Klumper in Amsterdam
'69 white 280 SL automatic