WordPress News Site & RSS Feed Developer Required

I’m looking for an experienced WordPress developer to build a simple, fast and reliable news website for my radio news network.

This is NOT a complex website project. - Please do not apply if your proposal involves building a bespoke website from scratch. I specifically want a simple WordPress solution that can be delivered quickly.

The priority is to create a clean WordPress installation that allows me to publish news stories quickly and automatically generate RSS feeds for affiliate radio stations.

Requirements
Install and configure WordPress on a subdomain (e.g. news.radionetworknews.com)
Clean, modern news-style layout
Fast loading and mobile friendly
Automatic RSS feed generation
News categories (World, US, Politics, Business, Sport, Entertainment etc.)
Easy-to-use admin panel so I can publish stories in seconds
Basic SEO setup
Ability to add featured images
Social sharing support (optional)
Most Important
This needs to be QUICK and SIMPLE.

I am not looking for a bespoke CMS or an expensive custom-built website.

I simply need a reliable WordPress news site that:

publishes articles quickly
generates RSS feeds automatically
is easy for me to maintain without technical knowledge
The design is far less important than usability and speed.

Please include
Examples of similar WordPress news sites you’ve built
Estimated completion time
Fixed price
Whether you can assist with connecting the subdomain and DNS
I’d like this completed as soon as possible.