I am FAR from an expert, but from personal experience:
When Junior was 15, he took lessons from a former D1 pitcher [about 30 YO]. Had no real breaking ball, although he fooled around some with the so-called "football slider". Coach said, "based on your arm angle/release point, etc, I think you should throw a slider instead of a curve - it will be easier on your arm [because of similar FB delivery], and not as detectable upon delivery [i.e. virtually same motion/delivery as FB]. That was 3 years ago; Jr still doesn't throw the deuce and has NEVER had a sore arm, and throws his Changeup with the same delivery too.
I guess if you get the proper instruction FOR ALL OF YOUR PITCHES and do your arm exercises/long toss/rice bucket/tubes, etc you will put yourself in the best proper position to throw effectively, and not get a bum wing.
IMHO
PS - CoachB25 is right on the money - there is too much to try to interpret from the written word on this site, and if it is like every other post on the site, you will get about 10 different opinions, ALL of which are ABSOLUTELY CORRECT!!
Get some one to SHOW you the proper way, have havve periodic "tuneups".