I'd go steady with the amount of Anise added, although not the same I think the Fennel seeds will already give some of the Anise flavour in that recipe, but Anise itself is much stronger.
Shame I have nothing to compare against myself, haven't had a real Balti in years.
I do use some of that same Balti mix alongside my normal spice mix (about 50/50) when I make a Balti.
I found it a little too fragrant for my tastes on its own.
Martin