Get a couple local foundation companies to look at it all and provide their options. They'd know they area better then us and be able to physically see what's going on and provide the best options.

WIth as much water as you seem to be getting adding a drain to the well and extending down spouts probably won't do all that much to help. It sounds more like you'd need a properly designed drain system around the foundation or if something already exists find out why it's no longer working.