at your stage, i would say a SF is an odd because he is good in many different aspects of the game -- he has some height (6-5 or so), can score (JS), has some skills useful for guards (passing, handling, outside shooting and outside defense), as well as possessing skills useful for bigger men (rebounding, inside shot, inside defense). if you can achieve all this (and think of it as a scale -- the challenge managers find is that training a SF to a high degree of proficiency in all these fields is impossible), then you have a player that is not only more talented than the player he is matching up against, but you have the benefit of a greater variety of tactical choices on offense and defense.
given that, i believe it is accurate to say most managers would argue that the SF should be able to shoot, play outside defense, and handle the ball -- if you are scrounging around on the TL, finding a player with the proper height and a head start in these fundamental skills would be a find. for myself, i abhor players who utterly lack certain / any skills ("atrocious"), but you make that call for yourself.
fwiw (and apply this to SF and more):
when i was at your stage, i went far with building a team that could play defense. my experience was a lot of newbies liked stats, high scoring, big offensive numbers -- good to be a contrarian in this regard. even now, and i am in div. iii., a good defense has kept my team competitive. but now the competition is such that i will not be moving out of div. iii until i get a significantly better offense (against pretty good defenses, remember) -- quite a challenge.
best of luck. and remember there are no hard and fast rules for div. v -- learn the game, there are infinite ways to succeed.