Google Sites BIM Website Redesign

I built www.velarbim.com myself on Google Sites, but the structure and copy no longer reflect the professional image I need. I now want a complete visual and content overhaul while staying on the same Google platform so I can keep editing it later... (Budget: $30 - $250 USD, Jobs: Content Writing, Graphic Design, HTML, SEO, Web Design, Website Design, Website Development, Website Optimization)