1. Why don't you use a separate folder for the images ? All are in the WP
media. - Because we are using the WordPress functionality for image uploading, and this functionality automatically put these images to the uploads folder and save these images in the media (not dublicate these images).
2. Removing an image doesn't delete it from the folder. - this question to WordPress. If you removed the images from media correctly, then its is removed from folder.
3. Is there any way to have the thumbs in an album to display the
descriptions on the right (i have set one per row) somehow ? - it is necessary to edit the code and styles. It is a paid service. If you interested, please contact us through our contact form.