If you are reworking and you care about accessibility/viewability/future-proofing, I'd recommend using viewport values when placing images. I use a scaled resolution because of bad eyesight and I have to change my zoom in your site because else images are all over the text or are out of the screen... using viewport values the site will look the same on any resolution - as long it's using the same aspect ratio

I used only viewport values, including for font, on a site I created later, and I quite liked the result. In my current site here I made some very flawed scripts to forcefully scale my page on higher resolutions, but if I ever rework it I'm changing it all for viewport values.