I'm sorry to hear about your family loss. When did you take the exam to get a 511?
Neuroscience Lab - 1500 hours over 3 years (including summers). A lot of patient interaction through this so I would classify it as clinical.
You mean clinical research? What were your responsibilities, and were these subjects or patients? Did you have to enter EMR data? When you go for the IRTA, will you continue to do clinical research, or will you do more traditional wet/bench?
You also must include non-clinical community service that shows service orientation. You have a lot of fundraising and administration with NPO's, but it's not obvious what you have done face-to-face with communities experiencing distress (in the United States). Crisis line experience is valuable but not sufficient for service orientation if you review the AAMC competency definition. You need 150 hours of activities when you submit like food distribution, shelter work, job placement services, transportation services, or housing rehabilitation. Anticipated hours do not matter.
That said, you could get some attention given your resume, but you need to be aware of pronounced weaknesses that you need to work on. The first question I have for you: does it matter
what brand is attached to your MD/MPH? Does it have to be Hopkins, Harvard, or Yale (which is out of reach on the MCAT, but not sure if your international experience can balance that)? How about DO/MPH? Why is the patient care aspect that important for you as opposed to the administrative and fundraising side where it appears you are experienced? Do you want to find
schools with student-run clinics, and what would you be looking for since not all of them are going to be the same?
BTW: no I don't think at first blush that you need to apply to DO unless there are specific opportunities a DO program offers that really resonates with you.