Looks good! This is my mining build (not yet built.. but SOON).
I really wanted the 8 bin refinery to avoid micromanaging all the time, but I guess if you are more selective about which asteroids to prospect it doesn't matter.
Recluse Mining ASP I loaded it for bear with weapons...but I made this build before Patch 2.1, when it was also possible to be a capable bounty hunter with this. No longer, so your build with the capability to run like hell and drop mines is probably a better bet with the current killer AI.
I will also trade up to a better Life Support. 15 minutes has saved my a$$ more than once.
My build is twice the cost of yours largely because of the uprated Powerplant and Thrusters to support the weapon load.
Also tired of manual docking in my mining Cobra, so I dropped one cargo space to have a docking computer.