I think you're making a great decision, squirrley.
These lifestyle changes are usually more expensive, but you'll reap incredible benefits from the investment.
I, personally, notice a sharp decline in my drive if I leave meat out of the diet for too long (though this might have more to do with having trouble consuming enough calories from whole produce).
I would recommend that you read up, if you haven't already done so, on what foods to combine to meet your amino needs if you do drop the meat.
Good luck.
~Sphinx
You don't need eyes to see, you need vision. ~Faithless, Reverence.