Deciding Master in Switzerland HSG, UZH, HEC Lausanne

Hello, I am deciding on which masters to apply to and the following 3 Universities in Switzeralnd are my goal HSG MBF, UZH MBF, HEC Lausanne MIF.

I have a CGPA of 5.33/6 converted to swiss system, I study Bachelor in Business at a non european target (best university in Croatia). 

I've worked on a Wealth management internship for 3 months in a well knowned company in south America (planning on doing some non profit - humanitarian work this summer).

As for cover letter I'm pretty good at it, well above average. Extracurriculars is mainly trading competition and being co-founder of a Fintech startup, currently participating in a competition to obtain funds. I take part in multiple sports and would say i have an international background.

I am planning on learning french this summer (should be easy since i speak spanish and italian).

I don't have my GMAT score yet, I will study for it in summer.

So anyone who has experience with admission to these universities and programs please let me know what can I improve and if I currently stand a chance (I'm going into 4th year in september)

The ultimate goal after masters is AM or S&T. Thank you for your help in advance.