Future space heater has arrived to earn me pennies! Will probably write a nostr long-form for beginners with everything I’ve learned. Lots of information out there about the process but it’s very scattered. 
Discussion
Equipment arrived in great shape and works perfectly. Thank you nostr:npub1q4zl8v0cpeu0lv47msq2z0jpkr2q3wq5d4ukylxg9sx7t7rcz0uq5ftv7q !
So far I have replaced the PSU fan and tinkered with braiins.
Next steps: after a lot of research (mostly digesting others experiences and work) I opted to go for the 2x 140 mm noctua fan set-up over the more intense AC Infinity Cloudline S6. This was solely because of cost trade-offs and the fact that the S9 will be underclocked and not delivering much bitcoin anyway. I still need to explore adapter options for attaching these fans to the miner - there are some nice 3D models out there, but I don’t have a printer and shipping from a retailer makes these options more expensive.
If I ever do this with a more modern miner it would be a very different decision and an interesting path with equipment like the njord board by Pivotal Pleb Tech that opens the door to better cooling at a higher cost.