I took the liberty of doing
some alterations to your ship. The main changes:
- You should be running with a smaller, but better, power plant. The 6A power plant is superior to the 7C one in all aspects and the difference is just about 2M credits on a 100M ship.
- D-rate life support and sensors to maximize jump range.
- Your power distributor is not sufficient to run your two mining lasers indefinitely (or at least until the asteroid depletes). Exchange it for a 7A distributor.
- Place your surface scanner in the size-2 slot and upgrade your prospector to a size 3. This allows you to prospect more than one asteroid at a time.
- A-rate your prospector! This is an absolute must if you are ever going to use the mining lasers. The prospector rating directly affects how many fragments you can extract from an asteroid with the lasers.
If you get comfortable with docking manually, you should throw out the docking computer, send the surface scanner to the 1-slot, downgrade the refinery to size 2 and put it in the 2-slot, and insert another size 3 collector controller.
You may also want to consider ripping everything out of the Krait mkII and install all of the modules in a Python instead, which will give you 64 tons of additional cargo space.