Hi,
Thanks for posting and sharing your background info. Overall you have a solid profile from what I can assess here, and yes it's a good idea to apply R1 for best chances.
Your strengths:
-stand-out GMAT score
-startup experience; sounds successful from what you've described with lots of management and leadership experience/opportunities (and ultimately, experience you'll bring to a b-school classroom)
-quantitative and finance experience, in addition to engineering experience
-some international experience
-the charity work your company does, being that it is your own startup
-writing experience & guest speaker experience (strong communication skills are a plus at b-school)
-extracurriculars presumably, though you have not detailed here
No glaring weaknesses thus far. More detail would be assessed in terms of your work experience, your startup, how the company has evolved and what you've learned from it. Your essays and recommendations would also be important. But if you put together a strong application certainly it sounds like you would be well-positioned for a place at a top business school. Good luck on the process, keep us posted, and come back with any q's!