Create metafields and design for product pages in Shopify

I’d like your help with some customisations to our Shopify store using the Enterprise theme. Please see the details below:

1. Category Page Layout Update
On all category (collection) pages, I would like the product listings to match the layout shown in the following example:

https://cooleasy.co.uk/collections/high-wall-mounted-air-conditioning-systems

Specifically:
Products should be displayed in rows (list-style layout rather than grid)
On the left side of each product, include:
Price
Size options
“View Product” button

The overall layout and structure should closely match the example provided

2. Category Page Filters
Please create and display filters on the category pages similar to the same example link above.
Required filters:
Brand
Daikin
Mitsubishi
Bosch
Type
Wall mounted
Ducted
Ceiling cassette
Low wall mounted
Floor standing
Power Supply
Single phase
Three phase
These filters should be easy to use and visible on collection pages.

3. Product Page – Specifications Tab
Please create a tabbed section on the product page, including a “Specifications” tab.
For reference, here are examples of what I’m looking for:
https://support.cleancanvas.co.uk/hc/en-us/articles/11701560055581-Product-page
https://themes.shopify.com/themes/enterprise/presets/enterprise
The Specifications tab should allow us to display structured product information clearly.

Please let me know:
Estimated time to complete
Any questions or clarifications needed
If there are better approaches using native Shopify features or apps