Need urgent custom theme development for the our website

We have a website that is built on WP. Now we are facing a loading issue due to theme or other JS query. We need custom theme development for the site which will meet the following requirements:

– Custom theme development
– Quick load within 3 seconds from mobile and desktop
– Mobile, tablet, desktop responsive
– Google page speed score more than 90 for mobile and desktop
– No useless JS to run any functions
– Every page will have a dedicated contact form, so the admin can understand which leads are coming from which forms.
– The new site will be hosted on a cloud server
– No design. look n feel, features, plugins (SEO + Live Chat) will be changed
– Header footer should be similar to the present site
– Blog and blog posts must have featured images, category, posts type, tags, etc
– CRM integration
– Email marketing integration
– Google analytics, conversion code, webmaster tool integration
– Give the option to create a “Duplicate page”.

Please give your quotation and time.