My advice
My Laser Weap is at 400 (comparison to your 300, or more)
Hunt naked, saves you armor decay. (Use your Vivot1 to heal after, so you don't take any free hits)
Go to Atlas Haven, and go hunt around there naked. (snablesnots have 20hp, sabakuma 20 (NW of Swamp I think), daikibas 30, combibos
80 (with crazy arse regen, every three or four shots, they regen hp), berys 100)
Another, go to Nea's Place (in Amethera), and go team swunting Ambus (pretty economical, plus no armor decay, and a nice chance to win big*
I'd hunt snables till you max your opalo. Plus, I find (maybe just me), but when you take say 20 shots in a row at one mob, you get 1 or 2 skill gains. While shooting 5 snables (20 shots) gets you far more skill gains.
I haven't tried mining, but I'd love to. (will try this week, check my blog
)
Best of luck!
*My friend got a nice boost into the game when she and her team got a 5.6k ambu (800 PEDs!)