I'm an undergraduate student. Today, I was writing an email to my department's undergrad adviser to request a meeting to discuss what I will study next year. When I began to write the email, I wrote
Dear Dr. X,
Next year I complete the final year of my program.
When I read it aloud, it sounds right. However, I'm writing about an event in the future, and so I believe that I should have written
Dear Dr. X,
Next year I will complete the final year of my program.
However, the use of will seems to make the sentence more presumptuous.
I suspect that the first version is written subjunctively*. However, to the best of my knowledge, subjunctivesque constructions that resemble the first version are typically imperatives, and typically follow that. For example, 'It is required that she arrive before noon tomorrow.'
Is the first version grammatical. If so, why is it so; if not, why is not grammatical?
(Note: I asked this question in order to learn about English. I did not intend to ask for advice on what I should write in this email. Accordingly, I would prefer a answer that explicates the relevant grammatical, or linguistic, principles. Thank you.)