The answer to your question is yes, being a pitcher is enough. Pitchers are sought after and recruited first before any other position.
Most pitchers, you will find, at one time most likely played every position and were very good at it. That was the case of my player, but somewhere between 9th and 10th grade he began to grow leaps and bounds, and became very slow at baserunning. At that time it became apparent that his strength was in pitching and although he did continue to play occasionally at first base , and as a DH (they always replaced him when he made it to first
) in HS, being a pitcher for him was enough. He still complains about not being able to be in the game everyday, tries to convince coach he can still hit, but for him worked out well for opening lots of opportunities.
As far as position players, I think it enhances a position players possibilities if he can play multiple positions more than if a pitcher can. And most likely if you are recruited for one position, you might end up playing at another. That ss looks pretty good to a college coach if he can play second base or outfield as well.