It is actually very cheap here. I paid like $12 for a little bottle that would do hundreds of delids.

Another bonus with this product is once it dries you can just peel it off if you need to.
...

I used liquid electrical tape for mine. Very easy to find where I am.

https://i.imgur.com/dnYibbu.jpg

Not really a cooling issue here. If you are the type to leave the pc running most of the day when not in use then i would prefer to have the cpu clock and voltage down clocked.

As soon as you...

I always keep it on high performance in control panel, I just turn processor minimum power down to 20%. Allows for downclocking voltge and cpu clock on adaptive voltage.