Eating quail eggs might help lower cholesterol, they likely won’t make it worse

. You need a reason, how about the ability to cut recipes in half or even quarter them when they call for 1 egg. Or imagine tiny deviled eggs (if you have the patience to peal them!). Just the cuteness factor alone is a great reason!
Also, on the feather sexing thing, in theory you can do it at 3 weeks but my first batch kept their baby spots until 3.5 weeks. I had 4 brown hens (out of five birds) that all decided to be boys a few days later. Oops! They are a ton of fun, even with our occasional mistakes, enjoy!