Temps are a bit on the high side but as long as you've got aquedate ventilation in your mining space you should be fine. I'd aim to try to lower the ambient temperature of your mining space or increase airflow in the room.

Your fan speeds are pretty low which is probably the reason why they're running so hot. I'd bump the fans up to maybe 60%, tell us what temps you get then. Ideally you want to be below or around 80.

If you bought a Bitmain APW3++ power supply, the required cable is just a normal plug like you'd use for a computer.  The socket type on the APW3 is called c14, you can find a pic here

https://en.wikipedia.org/wiki/IEC_60320#C13.2FC14_coupler

It's likely you have a lot of these lying around if you have a bunch of computer equipment.  You can use one of those computer or other appliance cords as long as it's not too thin - miners draw a lot of power.  Or else go to your local store and buy a nice thick one for a few pounds.

If you did not buy an APW3++ power supply, then you need a 1600W power supply.  Here in the US, I can buy a generic 1600W power supply for about $100 from ebay.  It will come with the cable to plug into the wall, and it will come with 10x PCIE-6 12V power cables to plug into the miner.