Although it's a higher SKU, I have a laptop with the AMD 7840U CPU and it's quite fast, even for some light/medium gaming. The 7735U doesn't look too far behind

Although it's a higher SKU, I have a laptop with the AMD 7840U CPU and it's quite fast, even for some light/medium gaming. The 7735U doesn't look too far behind it, for the purposes you listed I think it would feel quite snappy. The only thing to keep in mind is a 4K OLED screen will be taxing on the battery, so you may not get more than a few hours. But if you're plugged in/docked most of the time it is likely not an issue!