Don't baby them right now-handle them, yes, but don't treat them like babies, as some folks do. You really won't know until the hormones start raging. Then, you'll see it start, if it's going to. It often begins with biting, then progresses to rushing or flogging.
If biting starts before mating age, you can often stop that by grabbing him up and holding his beak shut. My sweet lovebug rooster, Isaac, who is over 3 years old, bit me a few times at around 12-14 weeks of age. He didn't like that beak-holding thing at all and it worked. He's the best rooster you could imagine, HOWEVER, it's not in his nature to be human-aggressive anyway. The biting was boundary-testing, considering the age at which it occurred. Isaac was never held or coddled as a chick, just talked to and worked around, pretty much ignored. He was mildly standoffish and we didn't push him to be otherwise. Now, he's my best buddy. He never flogged or became a problem, even when his hormones kicked in.
His brother, on the other hand, was the friendliest cockerel of the big bunch. We even called him "Mr. Friendly" for a time. He became a biter, then a flogger and was given away with full disclosure, along with another who was following in his footsteps.
The blue Orp in my avatar has never so much as nipped me, even when his hormones kicked in. He was hatched here and is now going on 6 years old, just a big blue teddy bear, so good tempered males rarely become a problem even when they mature.
Temperament is heritable. Keep the best, cull the rest, temperament-wise, and you'll breed better tempered males overall, IMO.
Yours could be just fine. I hope so!
