That’s all good, no problems here.
The only thing is, you don’t have to export it in ProRes, use H264 that’s more than enough.
For the sound quality, you set up your timeline 48Khz, that’s all you need. All good.
<font face=”inherit”>The most important thing about the picture quality is, you should use bigger images if you can. Your timeline is 3840×2160</font>;<font face=”inherit”> your images should be at that size, at least.</font>
Turning image quality to Better allows you to see your timeline in better quality, but it doesn’t affect the export.