Joomla E-Commerce Template

I require a Joomla template specifically for use with Hikashop.
N. B Hikashop is compatible with any Joomla template.
https://www.hikashop.com/extensions/hika-business.html

A good reference for this project is: https://www.electricalcounter.co.uk/

The Focus is on the layout of 1 page which will continue through all other pages.
Header [ logo – search – checkout]
Menu Bar [menu to be drop down mega menu]
Left Side / Category menu.
Small description block top centre/right – possibly use of a slider.
Categories or products below.
Footer

The main workload of this project is setting up the the Layout, then CSS design of:
The Main Product Category Display. Style 1
The Sub Product Category Display. Style 2
The Product Display. (short display) Style 3
The product Display. Style 4

*The mobile version on iPad and iPhone are especially important on this project.*

Adapting an existing template is fine, providing the result is 100% stable and what I have asked for.
Use of Gantry or similar is fine,

Exact requirements will be define privately

You do NOT have to:
Populate the site. (That will be a separate project.)
Set up Hikashop, I will provide that and set up Categories, Sub Categories, Products for working with.

You DO need to be contactable by mail / possibly chat / phone would be great, during daytime - UK time.
** Zero language barrier**
Ongoing Support for alterations and changes

Apologies in advance but I don’t have the time to deal with silly proposals and they will be ignored, as will broken English due to the risk of miscommunication.

This is a genuine opportunity for on-going work, so please describe your approach /technique clearly, with 3 demo’s of your work. My Budget is a guide only. I look forward to your proposal.