If you want to check out what the install entails have a look at the video link below:
https://www.youtube.com/watch?v=kqXpAKVQDNUThis is the one I based my install on. He goes through the process very steadily (others I checked seemed too quick to follow easily) and by following his instructions stage by stage I got a working install at the first attempt. So I was impressed by his thoroughness. The basic setup won't immediately give you good results, you will have to play a bit with the built in extensions and may need additional files to get those operational. There are a number of extensions available, I've only loaded two additional ones (there are several built in), these are ADetailer and ControlNet. ADetailer can fix some issues with faces, hands, etc and ControlNet enables photos and sketches to be used to influence poses etc in generated images.
My PC spec is i7-11700K 3.6ghZ, NVidia RTX 3060 12GB (max SD used to date about 5.5GB), I'm not sure how this compares with your.
Disk SSD 1.5TB plus 2TB external.
If you decide to go down this route I'll be pleased to help in any way I can.
PS: You have to bear in mind I'm only about six days in front of you!