It all comes down to the final exam on Tuesday, worth 30% of my grade. And how much the grades are curved. Everything else is already determined.
From the syllabus:
Letter grade cutoffs will be determined at the end of the semester, and there is the possibility of an upwards curve (though not a guarantee of one).
Here's an estimate of my grades — though it's very sensitive to the final exam score... maybe this market will motivate me to study more...

Link to grade estimation spreadsheet: https://docs.google.com/spreadsheets/d/1EFgiQ8PZ0kqXgrgJNRXbCpVd_lsIeA0n5tZUUvjIg9Q/edit?gid=704261578#gid=704261578
See also:
General policy for my markets: In the rare event of a conflict between my resolution criteria and the agreed-upon common-sense spirit of the market, I may resolve it according to the market's spirit or N/A, probably after discussion.