star san is fine for wine making (and mead making).
i wouldn't fret on the extra sulfites either, even if you age for 2 years. Reason: I have 6 bottles of mead from 10 years ago, no sulfites or sorbates added. All of them are still perfectly drinkable, not spoiled and not oxidized in the least. And they had natural corks.
Primary: English Mild
On tap: Pale Ale, Lancelot's Wheat, English Brown Ale, Steam Beer, HoovNuts IPA
Bottled: MOAM, Braggot, Raspberry Melomel, Merlot, Apfelwein, Pyment, Sweet mead, Cabernet
Gal in 2009: 27, Gal in 2010: 34, Gal in 2011: 13, Gal in 2012: 10