I always use pla. It doen't get warm at any point.
You only need the fan off for the first layer - and not necessarily that.
I mostly just leave it on.
If I have a issues witht he first layer then I'll switch it off, but that's pretty rare.
Good pla just doesn't shrink enough to detach.

There may actually be a proper fan socket on the motherboard. I did mine a couple years back, and never thought to look for such a thing :-)
You'll also need a 24 volt 40mm fan - NOT 12 volt. https://www.amazon.com/4010-24V-Brus...0mm+24volt+fan

That kind of thing. And some extra wire. I think I used the wire from some cat6 network cable. There's about 200metres under my desk that no longer has a use. Pretty much do all networking wireless or through electrical wiring these days.