I went the same route as the OP, Cobra - Asp - Python - Clipper. I moved the Python into more of a combat role and decided to use the clipper for trade/mining. I found that even just mining in Solo/Mobius you have to arm the ship due to pirates, sometimes wings of pirates. After a number of mining trips (netting about $3-4M each in the clipper), I decided to save up and go the Anaconda route. The extra internals can let you add more collectors, stip/collect faster, and increase the haul, it's just much more efficient. I've only had the Anaconda for a few weeks and done 2 or 3 mining trips, it does work much better (minimal set up, I think I had about $170M when I bought it). The payout is about $10m if you can get a few mining missions at the delivery station. The downside compared to the clipper is I used to be able to outrun pirates when dropping into a ring, not with the Anaconda, you're pretty much committed to a fight, so you have to keep it armed and it's sooooo slooooow turning compared to a Python. The other downside is, although it's more efficient, it takes a long time to mine 300t of 3P..... it gets a bit boring....
Anyway, it does give you something to aim for, good luck!