The WordPress forums provide no support for K2 since it is an extensive modification and not merely a theme. All requests for support pertaining to K2 should be made at http://getk2.com/forum (which is currently down pending a database upgrade)
Well, those who know anything about k2 (including Denis) will help here when they see a post (and I added the “semiologic” tag, because I think that’s what Denis picks up on fastest) – but customizing the setup is pretty much beyond the basic scope of the forum.
If you have specific questions, please post them. With links.
It’d be nice if the K2 team would get there forums back up !
Your customizations are somewhat complex as far as I can tell. I’m not familiar enough with K2 to even know if the template needs to be edited. In any event, after a lack of answers like this, you might want to try tossing a $20 budget towards rentacoder.com.