e commerce app design

We need a team to develop this in Low Price

Admin panel [Web] to manage all things ( Accept order, assign Delivery boy, cancle order, Update items, update out of stock, Update offers and Promo codes etc)
Delivery Boy App [android] ( check order --> Order Pickup -->Check delivery Location --> On the way --> Delivered)
Consumer App [Android and IOS] attached Flow chart for this.
Initially we aim for Single Vendor, in future we go for multi vendor.
interested ones Please send out SRS so with Mile stones and Time Lines and Cost.

** Note : Looking for Low Budget

Thank you!

Regards
Ravi Teja