This will be my first build, but I will have the assistance of someone who has built a computer from the ground up, but is not an avid builder. That being said, would you deem it necessary to have a mini-speaker?
I prefer having them. However the computer in my sig doesn't have one. Fortunately it works great, so it was no issue. Sort of like insurance, 99.9% of the time you don't need it, but the 0.1% of the time you do, it is a lifesaver.