Dear Hiring Manager,
I have reviewed your project specification. I am really interested for the job and looking forward to make a very long term working relationship. As per your concern please find the following answers:
1 - Solution to be developed in Opencart ===> I am expert with opencart.
2 - Mode of payment COD and Credit Card ==> Okay.
3 - Required load time (4 Secs maximum) ==> It is critical for me. Loading time can be optimized but if the site has huge products, images then it will be slow. If you provide us Cache plugin or boost plugin we will install that for you.
4 - Efficient search to be used (design and criteria will be shared) ==> If plugins are needed I hope you will provide them.
5 - Exact design of home page, category page, product page and other pages are ready and will be provided to the developer. ==> Yes can be done.
6 - Site to be SEO optimized, requirements will be given to you for Onpage optimization (URL structure, page layout, headers etc). Developer need not to apply his brain, just need to implement the requirements.
Ans: SEO optimized yes. Seo plugin will be needed