It all depends on how serious you are about one sport or another. If there is hope that your kid is going to go far in one sport but get's hurt doing other sports than it's time to rethink the other sports.
Plenty of good juniors don't make it because all the factors are not in. Parent dedication is # 1, talent 2, coaching 3, tournament play 5, no injury 6.
Money is always factor. if 1 factor is missing it is very tough for anyone to make it...