Somehow I've never seen this done before. Not too hard to do and looks great to me.
The signals themselves are pretty easy. Just steal 4 more from a junkyard WITH the wire harnesses. They don't quite fit in the original bumper so you have to cut the backing of the bumper out as well as shave down some of the turn signal housings. As for making them sequential, Amazon has some cheap kits but occasionally you can find the relay boards for a couple bucks.That looks pretty cool. Maybe you could tell us what we need to complete this effect .
So as DRLs what circuit did you run them on because car's that come with DRLs from the factory turn off when you turn on your headlights. But I'm going to show my Son both of your ideas and see if he will let me do something like that my biggest problem is deciding which of these great ideas I would do.