Here is my brief profile:

Age: 24 (25 by program start)

Country: Ukraine (Eastern Europe)

Education: Moscow State University of International Relations, studied international economic relations (Top 3 University in Russia), GPA 4,0 (top 10 students in the university)
graduated with honors, awarded Dean's scholarship

GMAT: 750 (Q50 V 40), TOEFL 109

Work experience:
self employed as an English language and mathematics tutor - 1 year
KPMG (audit) - 1/2 year
family business (approx. 15 employees) - 1 year (lots of leadership experience + dealing with customers, clients, logistics, etc)
Government job (Ukraine) - 1.5 years (work with international economic organizations, manage a technical assistance project (jointly with the
local United Nations office) with a budget of more than 0.5 mln USD (hire scientists to conduct research, organize conferences and seminars, organize visits of foreign experts to Ukraine, lead work on translation of Ukraine's foreign trade legislature into English), member of an intergovernmental working party, lead work on trade facilitation with the country's business cycles, participate in negotiations on creation of Free Trade agreements with other countries ). Have other achievements at work, recently promoted.

Extracurricular activities: a lot. Swimming (first-class degree, participated in international competitions); head of the debate club at the university, have supported the club after graduation, convener and organizer of multiple international debating competitions hosted by my University, represented the university in debating championships in Europe; editor-in-chief of the University's newspaper; now help an animal shelter at home, do community work, etc

International exposure besides work: internship at Humboldt Uni (Berlin) - 1/2 year;
as a student visited Geneva-based international economic organizations and presented a project based on experience

Post MBA goals: finance, strategy

I'm highly motivated to apply for an MBA program, but I am not sure how b-schools might perceive my work experience.
Should I aim at applying to Booth/Wharton/Stanford/Columbia, Ross/Cornell, Darden/Tepper/Emory/Kenan-Flagler/Yale or the ones not in Top 25?

Also, i have obtained some of my work experience while being a student, and I'm not sure whether schools will count it as full-time experience (although I worked full-time). I have 15 months of full-time work experience after graduation by now, so it's gonna be 26 months when classes start (hope it happens).

Thank you in advance!

Thank you for your explanation, Linda!

You say I'm targeting the right schools but I mentioned completely different ones like Wharton/Stanford on the one hand and Kenan-Flagler/Tepper on the other hand.
Could you please clarify what could be my stretch and safety schools provided I offer the admission staff good reasons for switching jobs?

I would greatly appreciate your reply!