This outfit with a white linen dress shirt and chinos isn't a hard one to pull off and easy to adapt. When in doubt as to the footwear, stick to wedge sandals.
Chinos with Wedge Sandals Smart Casual Outfits
For a look that's extremely easy but can be manipulated in a ton of different ways, consider wearing a light blue linen tunic and chinos. Wedge sandals look amazing finishing your ensemble.