Boost Mobile PageSpeed for Webador Site

Description: My website is on Webador and loads too slow on phones. Google mobile PageSpeed score is 52, I want 80+. The page takes 8+ seconds to load. Oversized images and an embedded YouTube video are the main problems, especially the large banner at the top... (Budget: $10 - $30 AUD, Jobs: CSS, HTML, JavaScript, Mobile Development, Performance Tuning, PHP, Web Development, Website Optimization)