Thanks everyone for the feedback.

Incidentally, I came across two good review pages for the medication

Mirtazapine Reviews | Everyday Health

Mirtazapine Reviews & Ratings at Drugs.com

I can't afford to have the following side effects:
Grogginess: As I mentioned, I'm already not a morning person; I feel lethargic and unable to focus unless I have several cups of coffee. This completely ruins my productivity and (already compromised) ability to interact with people. I have a somewhat different form of hypergraphia - which, @Blueberrybook, I believe you have as well. I need to literally write down everything I see and hear, for fear of not being able to retain it. Whenever a task is assigned to me, I have to create a new Word document, write the background, and then jot down every piece of minutia about the task. For example, if you asked me what time it is, I'd write an "Abstract" about the evolution of watchmaking through the ages. This saps me of energy and completely wipes out my productivity.

Weight Gain: I'm 5'10 and weigh about 185 lbs., which is on the obsese side. I am already very conscious of my weight. When I look in the mirror, I feel completely worthless. Also during the day it's hard to focus and concentrate because I feel like "my gut" is hanging over my belt. This greatly diminishes my self esteem. Packing on 10-20 extra lbs is going to lead to a further decline.

So thanks everyone for the feedback; I appreciate it, I appreciate you, and I appreciate Psych Central forums!

Have a wonderful week!