Sole Proprietorship vs. One Person Company (OPC): 
Optimal choice for Vikram and justification:
Considering Vikram's business expansion, increased risks, and liability concerns, an OPC is the superior option due to:
Limited liability, safeguarding personal assets.
Distinct legal identity, guaranteeing business continuity.
Enhanced credibility with stakeholders.
Despite the increased compliance for an OPC, its advantages align perfectly with Vikram's expanding business requirements.