As long as the roots are strong, there's no reason to congo them. That is, if you want them to be roughly the same size. Different sizes look really cool, though. I love the look of super fat locks. That why all but 2 of mine are congoed.
And you will always have loose hairs around your hair line. Mine are 6 years old and I still have fuzzies there. It's just natural. Those are the hardest for locks to eat up, because they are only surrounded by locks on 1 side. So they only spend 1/2 the time rubbing against other locks. You could bead them or wrap them to a lock, but I'd just leave them be. If they want to tangle, they will. If not, they will add an extra layer of protection to your scalp against sun rays