your optimism can be contagious on this forum.
Here's a simple reality check. Look at the App tracker for HLS these past 5 years on LLM Guide. There are plenty of people who've made it.
Do you see anyone who lists their rank as 'not in top 50%' ? Does that mean something?
Decent work exp!? Barring a few brave souls, most who apply have 3+ years at the best firms / orgs / jobs. Can you convince yourself you bring something unique to the table that no other applicant will have?
Superior court clerkship is not what it used to be. 1 in 2 applicants these days claim to have clerked.
'reasonably good co-curriculars'. Is that a euphemism for being on the editorial board of some nondescript publication? Not good enough. Most folks wanting a ticket to Cambridge MA seem to be editors.
Bluntly speaking you'll be lucky if you can make it to Michigan, Cornell or Georgetown.