Using the regular front sight post and the '2' rear sight, mine was centered at 25 yds. - in fact I was surprised by this and happy. 25 or 30 yd zero with an AK is going to be rather high at 100. Sounds like you really want a 100 yard zero. Not a terrible idea but you would be somewhere around 1" low at 25. You can't have it both ways, hitting at 25/30 and 100. I'm not planning on using the sights anyway since I'm using a Romeo 5 on it. However, if I have to take it off and need to keep shooting, the 25 yard zero will be adequate for this pistol. I might take it to the 100 and just make some adjustments on the dot sight to improve my accuracy at shorter ranges. If I do this I will accept being a little low at short range, closer to zero at 50 and supposedly zero at 100. :) The sights, of course, will still be on at 25.
BTW, this pistol (Alpha Tactical 1.5mm receiver with Krink Booster) was $649 when I got mine, now $549 at Atlantic FA. I'm not shilling for them but that's a great price for a factory-made Eastern Euro AK.