Kevin,
My car has the SEM Hot-Rod Black without clear coat. I do have the SEM HRC 40 kit, but my painter didn't want to use it for the same reason, too much edge thickness. Sorry I can't help on the sheen question.
But, I have a question; why? Why do you want a higher gloss than "factory"?
If that car is anywhere near being a correct 429CJ ( I hope it is) then going off script could kill the value. If it's a clone, then whatever works for you I guess.
I also notice the floor pan is painted body color and that as you know is not correct, but your car, your way.
You know that is my dream car and color, so forgive me if I'm a bit harsh on you,
Here's a pic of my hood. NOTE that the front edge is wrong. That was a misunderstanding with my painter and was on me. It ought to be 2" from the trim piece, not the hood edge ( some will say 1 7/8"). Mine is 3" back because I told the guy 2" from the hood edge, meaning with the trim on.