I hope you didn't take my post as an attack, I didn't mean it that way.
As for the color of your sex links, I don't know, there are a lot of different strains, I have no idea which one you have. There are Red Stars, Black Stars, Golden Comets, and many, many, more. I don't raise sex links, I've only read about them and looked at a lot of pics. This may help:
http://www.feathersite.com/Poultry/CGP/Sex-links/BRKSexLink.html
When they get feathered out a bit, (may take 6 weeks, or more for gender-distinctive feathering to develop) look at the feathers on the neck, (the "cape") and on the back down toward the tail. The tips of the roo's feathers will be kind of pointy, the pullets will be rounded. Once in a while I see a pullet with sort-of-pointy neck feathers, but never down near the tail. Those are always rounded. The hens will also have usually have tail feathers that stick up, (a few hens tail feathers kind of droop a little, but they never get those long sickle feathers) roos will grow droopy, curved, "sickle" feathers in the tails.
By "research", I mean either go to the library and find books about poultry breeds, or do web searches and read about the characteristics of different breeds. (or both) Poultry forums like this one are also good for getting feedback from people who have tried different breeds. But the best time to do this is
before you buy 94 birds, not after! But of course, some people don't realize that they can find all this info on the web until they've already jumped in. Maybe that's what you did. I alway do web searches on the subject before I start any new project, so I don't get too many unpleasant surprises. You can't be
totally prepared for anything involving poultry or other animals, but it helps a lot.
I constantly see posts from people who buy the wrong breeds for what they want. People buy non-setters and try to "make" them brood, or buy broody breeds and try to "break them from brooding". Better to find out what breeds are best suited for your purposes to begin with, and go with those.
This site has a ton of info, links, and good photos.
http://www.feathersite.com/Poultry/BRKPoultryPage.html
You can look up scads of different breeds and read brief descriptions of them. They have links to clubs and breeders for most breeds. You can get more info from them. This is a good site to look at the feathering of roos and pullets to see the differences I was talking about above. They have some good pics of sex links, too, maybe you can find out what kind you have.
This hatchery,
http://www.mcmurrayhatchery.com/availableview.html
has good pictures and descriptions,
except that for standard breeds they don't ell you how long it takes a bird to reach the weights they give. So if a white rock gets up to about 8 lbs, that sounds good for a meat bird, but they don't tell you it takes almost a year for them to get that big. (At 10-12 weeks a white rock will only dress out to about 2 1/2 lbs)
They will, however, tell you which breeds make good setters and mothers. And which are good layers.
Here's a chart that can be helpful, but don't take anything it says as a final word. Some inaccuracies have been mentioned by some of the members here, so it's only a rough guide.
http://www.ithaca.edu/staff/jhenderson/chooks/chooks.html
About hatchery birds: for many folks, hatchery birds work out just fine. For serious breeding, you need better quality birds from a show breeder or preservation society. Behavior, eggs laying, broodiness, body conformation, etc., will often vary from the true breed in hatchery stock. For example, while a pure bred Orpington of good stock may get huge, be a great mom, and be sweet and gentle, you may get non-setter hens and evil tempered roos from a hatchery. Or not. Most hatchery birds will be fine, but there is some variation, and it's nice to be aware of that to begin with. Even from a breeder, as far far as behavior goes, there are no guarantees. There are strong
tendencies, however, in most cases they'll follow type pretty well.