If your ship is full of priceless metals and gems,
don’t run from NPC pirates. Just hit escape and reload. Even if they start to scan you, the 15 second danger countdown is plenty of time for you to safely quit and reload. And pirates don't spawn every time, so you can just reload until no pirates spawn (it's certainly quicker than jumping into supercruise and dropping back into the ring).
I tried a Phantom, Krait Mk II, and Python, and decided on the Python: the Python is slightly slower than the Krait, but has 9 internal slots. If you really want a Krait I’d go with the Krait Mk II: The Krait Mk II has a slightly larger internal slots, and one more hardpoint.
This is my mining Python:
https://coriolis.io/outfit/python?c...BmUEZgA4QFMCGBzANikI4SEhQlA==&bn=Python Miner
The Krait Mk II is faster and has slightly higher jump range and a bit more maneuverable, though a Python with engineered dirty thrusters/drag drives is fast and maneuverable enough to be a fun miner. And a 36ly jump range is plenty to find pristine hot spots outside of the bubble.