The kepi doesn't match with rank of Gruppenf�hrer, as it has the Tresse for the ranks Ober-and Brigadef�hrer. The Tresse for these ranks must be 1,5 cm.
The problem is always, that period pictures proove exceptions. I know a picture of Heinrich B�hmcker (Than Gruppenf�hrer) wearing a cap with Tresse below his rank.
Another exception is the collar-piping. When the SA introduced the second shoulderboard, the collar-piping was abolished. Period pictures many times prooves wrong.
Bob makes a good point about the belthooks. I checked my Standartenf�hrer tunic, and it's without.
The Tresse is attached sloppy, but that prooves nothing again.
I think what's left is your own feeling.
Good luck!
Laurens