Multiple inventory for same product

I want something like this functionality,

My requirement: Separate inventory should be maintained for pickup [ who picked up from shops ] and Shipping orders [ which we will deliver].

I want to create two different locations

1. Local Pickup Locations
Example stock[which admin will add]: 100

2. Shipping Location
Example Stock[which admin will add]: 50

Once I will Add different stock for both locations via backend with stock, I can give an option at the frontend to the customer for select options from both the location

like,

1. Customer add product in the cart
2. Go to the checkout page
3. Select option from location
4. order placed
5. if a customer buys 1 product and selects Local Pickup Locations then Local Pickup Locations: 99 and Shipping Location: 50 and vise a versatile

OR

1. Select option from location
2. Customer add product in the cart
3. Add products for checkout
4. order placed
5. if a customer buys 1 product and selects Local Pickup Locations then Local Pickup Locations: 99 and Shipping Location: 50 and vise a versatile

All I need with API, not on the website, possible via this plugin?

QUESTION: Is this possible to add individual stock fro both location?
QUESTION: If yes, then may I give an option to the customer for a select location?
QUESTION: All will be done via API? Do I need API for product info with different stock, location info, order creation with location selection?