Tweaking WordPress for faster page speed

Good morning!

I’m trying to improve the page speed for my website. When I run a page speed report at GTmetrix, here’s some of what it suggests:

Resources with a “?” in the URL are not cached by some proxy caching servers. Remove the query string and encode the parameters into the URL for the following resources:

https://www.louisvillederbyhomerental.com/wp-includes/js/comment-reply.min.js?ver=4.2.2
https://www.louisvillederbyhomerental.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.2.1
https://www.louisvillederbyhomerental.com/wp-includes/js/jquery/jquery.js?ver=1.11.2
https://www.louisvillederbyhomerental.com/wp-includes/js/wp-emoji-release.min.js?ver=4.2.2

The following external resources have small response bodies. Inlining the response in HTML can reduce blocking of page rendering.

https://www.louisvillederbyhomerental.com/ should inline the following small resources:

https://www.louisvillederbyhomerental.com/wp-includes/js/comment-reply.min.js?ver=4.2.2

116.6KiB of JavaScript is parsed during initial page load. Defer parsing JavaScript to reduce blocking of page rendering.

https://www.louisvillederbyhomerental.com/wp-includes/js/jquery/jquery.js?ver=1.11.2 (85.8KiB)
https://www.louisvillederbyhomerental.com/wp-includes/js/jquery/jquery-migrate.min.js?ver=1.2.1 (5.5KiB)
https://www.louisvillederbyhomerental.com/wp-content/themes/canvas/includes/js/modernizr.js?ver=2.6.2 (4.2KiB)
https://www.louisvillederbyhomerental.com/wp-content/themes/canvas/includes/js/third-party.js?ver=4.2.2 (1.7KiB)
https://www.louisvillederbyhomerental.com/ (1.3KiB of inline JavaScript)

The following image(s) are missing width and/or height attributes.

https://pixel.wp.com/g.gif?v=ext&j=1%3A3.5.3&blog=65386342&post=3982&tz=-5&srv=www.louisvillederbyhomerental.com&host=www.louisvillederbyhomerental.com&ref=&rand=0.3069550054257636 (Dimensions: 6 x 5)

Is it possible to make any of these recommendations without breaking my website? If so, how?

Thanks!