I think there are some healthcare volunteering things you can do - working at a blood drive or cancer drive, doing scribing for a physician, volunteering at a nursing home, working with the disabled or mentally challenged children, etc. There are many possibilities in terms of healthcare exposure. Even though you said, “Big institutional hospital, allowing but the work does not allow shadow and it is more volunteer work in discharge, maternity ward or gift shop etc.” – those are fine to have on your CV. You can’t be picky as a high school student. These are things you should buff up on in the summer and early fall, before you have to apply in the fall this year.
I don’t see where you’ve listed any BS/MD programs above, however, here is a starting list: http://www.■■■■■■■■■■■■■■■■■■■■■/BA_MD_programs.html
The truth is no one can tell you which BS/MD programs you are a a “shoo-in” for, as there are many parts that are evaluated. I think with your scores you can at least get interview into places like Brown, UCSD, Northwestern, Baylor, Pitt, Penn State/Jefferson, etc.
You should apply to as many BS/MDs as you are comfortable with and would be comfortable making a commitment to based on the reputation of the medical school. You do very well on standardized testing , so I don’t think even doing the normal traditional 4+4 route would be much of a problem for you, in terms of the MCAT. So apply to the normal undergrads that you’d be happy with attending and that you think you’ll get a good education, not just for purposes of applying for med school.