Thanks for the offer of help Jorgzen. I did send you a tell, but you were off-line. After another failed attempt, I finally managed to get to the Omni Mining Facility in one piece, complete my little mission, and return to Athen safely.
I figured out that I was making two mistakes:
1. The first time I strayed from the road. Dumb. The road is obviously safer.
2. I was sometimes tabbing/targetting mobs to see what they were (and how tough they were). Oops. It seems this prompts some of them (mainly the nasty high-level ones) to attack. Duh. I should have known better.
It also helped that I was finally able to lock the run feature (hold forward key, depress and hold alt key, release forward key, release alt key). Easy for some I'm sure, but it took me a while even after reading Funcom's
Using the keyboard page.
All's well that ends well. Maybe someone will learn something from my mistakes.
And by the way, thanks to AO Universe for having such a nice forum!