Stock Redemption in accordance with GAAP

How do I record the purchase of stock from a shareholder for full redemption of shares? The shares will be retired by the SCorp. The shareholder owns 25%and will receive $100,000. Shareholder originally paid $2000 for common stock; $50,000 for additional paid in capital.
Common stock per balance sheet equals $8000, Additional paid in capital per balance sheet equals $50,000.

Do I debit additional paid in capital for 25% or do I debit additional paid in capital for the full $50,000?

The entry I propose is:

Common stock $2,000 debit
Addl Paid in cap $50,000 debit
Retained earnings $48,000 debit
Cash $100,000 credit

Or is the entry:

Common stock $2,000 debit
Addl Paid in cap $12,500 debit
Retained earnings $85,500 debit
Cash $100,000 debit