Hello!

I'm a newbie in a need of some typo advice from experts as I have become overwhelmed by browsing the web ...

I'm a student and currently redesigning a medical magazine run by a non-profit student organization.

I'm looking for a sans serif for headings (it will also appear on posters) and a serif for long texts (2 columns).
Keywords: economical, legible, modern

I like Garamond Premier Pro and Minion Pro because they are very economical and legible but I have problem with paring them with a nice sans serif. I really don't like how humanist Gills Sans or Syntax look as headings. They have great amount of glyphs (which is also important to me) and they are a classic option but maybe I prefer something more fresh and modern. I really like FF Tisa but again I have the same problem as I don't know what goes well together with it.

I really like Klavika for the headings and I think it would look great on posters. I have read it matches well with Adelle, The Serif and Unit Slab Pro. I think this is a more modern option but I'm concerned its not appropriate for long text - or is it? I like DIN Next Pro too but I think its more for way finding?

I'm totally confused ... Please, help me find my pairing :) I'm also open to something totally different from fonts stated above.

Thank you for your answers!