Great, you will need to use the PS/2 keyboard and mouse for the OS install of W7. I am also a stick in the mud, prefer XP for it's simple interface, dislike W10 as well. Ya, weekend sounds good, providing you can control those itchy fingers.
In the video, notice he does the spread method for the TIM; that is quite hard to do without a lot of practice, this is a better method, > https://www.pugetsys...Techniques-170/
My build method initial steps, I use disposable medical examination glove, gives anti static and contamination protection. A #2 magnetic tipped Phillips head screwdriver.
working on the MB box, Install the
TIM, Cooler. cooler fan plug.
2 main power cables.
MB iGPU to monitor. Test.
I/O shield from MB box.
Check Standoffs. coninue.