Improving page speed for enfold 2017 theme

Hi Enfold Team,

I just ran a page speed test for our webpage (link provided below) and our desktop speed came up to 66 for desktop and unavailable for mobile.
The page speed insights tool indicates many options to improve speed such as:
(1) Leverage browser caching
(2) Minify CSS
(3) Minify JavaScript
(4) Eliminate render-blocking JavaScript and CSS in above-the-fold content
I also read a few posts on possible plugins to use to do some of the above like browser caching and minify CSS. (https://kriesi.at/support/topic/tips-on-speeding-up-site-performance/)

Can you please recommend the relevant plugin based on our website for all the above 4 actions? Different posts mention different plugins and any guidance on what would be correct for our webpage would be most helpful.

Thanks
Garima