Startup - MrMrsCart - An Indian social commerce platform (Reselling model)

We are currently into the development of the application and we are expected to go live soon. Now i am looking for a digital marketing strategist / strategy agency who can come with:
Custom Social media strategy
Positioning and Voice of Brand
Market Analysis
Ideal Buyer Persona
Competition Analysis
Defining your Short term and Long term targets
Social Media Audit
Social Media Platforms to Focus on
Content Marketing Strategy and Ideas
Hashtag Strategy
Influencer Marketing Strategy
Paid Ads Strategy
Email Marketing Strategy
KPI's
Cost Control.
Custom Action plan (with Checklist).

We need to build a strategy to ensure we reach correct supplier and reseller.At initial we are planning to go with men/women fashion & apparels and by later we will start to add the more products.