Shopify Theme Customization (Testament 2.0)

I need following customizations to my Shopify Store Theme (TESTAMENT)

Category Page

I need ajax sidebar Filters Added to the category page:
1- Filter by Price with a Slider
2- Filter by Category and Subcategories
3- Filter by Color

Single Product Page

I need custom product Meta Fields for each product to be shown below the the price of the product. Here is the list of the Meta Fields:

1- Metal
2- Metal Stamp
3- Dimensions
4- Weight
5- Presentation
6- Delivery
7- Safety

I should be able to add these meta fields from Shopify Product Dashboard and in future make sure these can be added further if needed.

Only apply if you have 3+ years experience in Shopify theme development.

Thanks