JPEG & RAW will give you both files, yes
If shooting JPEG, then Setting the Sharpness to +1 is a must. Contrast and Saturation is up to you (trial and error really)
For EV, I tend to always shoot a little under (half-stop to a full stop under) Easier to bring it back in Lightroom from darker than it is from Blown out highlights.
Shutter speed doesn’t really matter for stills unless you want creamy smooth water/waves, then you want a minimum of 2 seconds (most definitely bang a filter on the lens to get the exposure down for that length of time)
Here’s how to get to the sharpness settings