Hi, consider me I will be able to install the modules as desired by you "I need the following modules installed, to improve loading time for my graphics and images, enhance the quality of images, combined with improving overall performance and better rankings, with Search Engines.
The following 3 modules were discussed + others you wanted to use but didn't specify.
Google Base / Froogle Data Feeder v1.00
Google XML Sitemap Feed
Kiss IT Image Thumbnailer