Hello NEW GUY!!!!
this is James from Thermaltake.
thanks for purchasing Core P8. one of the great choice for DIY liquid cooling... well, air cooling is fine as well.
the point is you have the best thermal solution for you system, right, no matter u go for liquid or air cooling.
and for your questions, kindly check below
1) depends on which fans and mother board you choose. if you choose 5V addressable RGB fans, u have to choose the motherboard that comes with 3-pin 5V connectors, okay. i would recommend u to choose our fans. there are many kinds of RGB fans which is very easy to sync with the motherboard.
2)not sure what u confused about? but personally, i love Riing Quad or Riing Trio. the fans we have on the Core P8 web page is Riing Quad. looks super good if u love RGB.
3) well, i would recommend u to take the whole system down and do the maintenance or upgrade. that will be safer.
feel free to ask any question and hope u love Core P8
James