Looking to develop a Large B2C Website Project

We are looking to develop a big B2C commercial website with following preliminary information. Please note the information stated here is preliminary & we will provide further details to shortlisted parties only. 1. User Registration:  Company / Business Registration  User Registration  Different categories of company / Business should have different registration forms. E.g. Product Companies, Service Providers, Transport Agents, Logistics Service Providers etc. have different inputs & different data requirement in registration forms. 2. Functional Requirement:  Location (Post code based) registration of all Business & users.  Email address & Mobile number verification for user & Business.  All “BUSINESS” & “USERS” should be able to post their Product / service portfolio & should be able to upload & update respective information.  All uploaded information by any “BUSINESS” or “USER” should be scanned through software at backend & any irreverent, explicit or illegal information must be filtered & must not be approved.  System should automatically calculate the distance between user & Business offering product / services based on post code information.  User / BUSINESS can post a “Trade Lead” like a “BUY” OR “SELL”  All relevant parties from “BUSINESS” Should get intimation / notification to relevant opportunities of their interest.  Transport providers should be able to make “Freight Quote” To particular trade lead.  Software at the back end shall automatically calculate as delivered cost of the product based on formulas set by administrators at back end.  All data should be securely managed at backend by strong & user friendly database management software.  Website should be easy to upload with minimum data consumption requirements for upload.  News section required for relevant product / services of interest. 3. Website Internal Search Features:  Strong internal search features for users / visitors to search products/ services.  Keyword suggestions during search. 4. Backend Website Control Panel:  Highly advanced control panel at the backend that shows user traffic from various geographical location, IP address tracking, hit count, track of repeated visitors.  Control Panel should be able to track all malicious attacks & users who might attempt to hack or otherwise try to upload irrelevant / illegal data on website. 5. Security  All security certificates to make website from any web based filters should be in place.  Strategy to present 3rd party attacks / hacking of website.  Prevent fake registrations / robotic accounts through strong verification processes.  Secure server management & strong database security. 6. Online Payment  Secured online payment system for all paid users through secured gateway. 8. Search Engine Optimization:  SEO tools to manage the title and meta description tags  XML site-map generators which will help Google index pages automatically  All other latest SEO technology to be suggested by developer. 9. Smartphone app development:  Development of Smartphone app in Android, iPhone, Windows etc. 10. Details about technology / platforms required for all above.  a. PHP7  b. HTML5  c. CSS3  d. Javascript  e. Ajax  f. XML