Small Wordpress Project

we already have our website in wordpress. ( 5 yr old website) We have new in avada theme and need to further modify so it should be exactly same as old website. Only 4 pages (including home page) need to be created/Modified as existing website page. Following thing must be taken care. 1. we have avadatheme configured on test link and 50% of home page is already prepared. For every work Avada element must be used to make content of pages. No Custom code or Code block should be used in content pages. 2. After your work Any layman should be able to manage all content of website n menu etc like wordpress gives. 3. Following GT Metrix score should be matched > PageSpeed/YSlow Score should be A > Fully Loaded time should less than 5 sec > Total Page size should be less than 3 MB. > Max Request should be 100. 4. all 4 pages should be complete responsive and tested among all browsers. 5. min plugin should be used otherwise this will slow overall website. 6. All pages must be SEO friendly. we need exactly same website page as we have with all 4 pages which will be given. Only thing as we do not have proper alignment or fonts on some places that need to be fixed.