I say practice alto on the 4C and keep the Otto Link for when, in 1-2 years, you realize that the real horn is actually the tenor 
Just kidding.
But seriously, keep the Otto Link, if you're not really desperate for money, because later you may regret having sold it. I know I regret having sold a 1950's Tone Master when I was playing mostly alto (not anymore).
Just kidding.
But seriously, keep the Otto Link, if you're not really desperate for money, because later you may regret having sold it. I know I regret having sold a 1950's Tone Master when I was playing mostly alto (not anymore).