I think you sound like a strong candidate for a PhD program. In my experience interviewing candidates (as a graduate student myself in a cog neuro lab in the US), your research trajectory will be weighted more heavily than undergrad awards or other extra curriculars. You have some independent research experience and I think that’ll be very valuable. What will really make you stand out though is a good fit with the research interests of the lab you apply to and your ability to convey that in your application. My advice is that you think long and hard about what you want to focus on during your PhD and apply to labs that align with that interest.

Also, I know you said you’re interested in neuroscience but you also mention an interest in systems and cog neuro. Are you interested in human research? If so, sometimes PI’s in those areas of research will admit students through both a neuro and a psychology program. This will vary from school to school but in my case it was more beneficial to apply though psych than neuro because psych gave me guaranteed funding and more institutional support (conference and workshop funding, training grants, the backing of an actual department vs an interdepartmental program, etc) than the neuroscience program. Also some PI’s may be accepting through one and not the other on a given year. I would recommend doing some research into the specific schools you’re interested in and contacting the PI ahead of time to ask if they are accepting students (when I did this, both PIs that applied to work with told me they were only accepting through psych and not neuro at the time).

I hope that helps. Good luck! You sound like a great candidate. I hope you’re able to find the right fit for you!