Hi I went through details and we can implement these changes creating a child theme to your existing theme. And I'll use action hooks, wp filters for implement changes without touching main files.
Relevant Skills and Experience
I have developed over 100 wordpress websites and over 50 wordpress plugins over last 5 years. And I have deep knowledge of how worpdress works , its hooks, filters, shortcodes, widgets system
Proposed Milestones
$400 AUD - Rebuild home page , reviews, testimonials, blog posts
$400 AUD - Event handler, listing changes
$500 AUD - Landing page, maintenance page, mail forms, and complete the project
I always follow the wordpress standards when code and it s file structure and I'm always use the best way around to fix the issues and implement functions. This way my codes won't break on future wordpress updates. I'll make sure the changes will not effect to page speed or loading and always use minified cs, js and compress image files with image sprites to make the site load faster and smoother.
I always avoid php loops as much as possible and use optimized mysql queries to load data with necessary information to reduce load and make the site faster. Also all of my work is seo optimized and mobile friendly as a standard. I'll test everything thoroughly before deliver.
Please let me know if you have any questions regarding my proposal. I can start as soon as you award the project and will provide you daily updates through the project if you selected me.
thank you
Vinoj