Adjust your RAW files as needed, then hold down the ctrl key and select (highlight) the raw files you want
1: Go to file / Batch Process (or click ctrl+b).
2: In the save folder box, navigate to where you want them to go.
3: In file format section, make sure you have EXIF.jpg set, and below it move the quality slider to 5 or 6.
4: In the output setting box, change this from 350 to 96.
5: Put a tick in the resize box, and type in 800 - 900 for the width.
Add a file name and click Execute. Then if your PC is as slow as mine, go and cook dinner.
Do a test on four or five images first, and see if they fit your needs.