Currently I'm working on SEO of one website www.mocomi.com. I want to change url (permalink) structure of entire website which has more than 5000 pages.
Currently website have structure of http://mocomi.com/tenali-raman-the-kings-condition/
Which I want to change it to http://mocomi.com/fun/stories/tenali-raman/tenali-raman-the-kings-condition/
Likewise I want to change entire website permalink url structure to make site architecture more SEO friendly.
Which means I'am going to add only categories & subcategories before actual link.
Kindly guide with following questions which I need to move forward with this step.
How much is it worth to change URL structure?
Checklist or factors I need to consider while making this decision?
Is it a good practice to change URL's of entire website at once or Should I change it in Parts?
How much time it takes google to rank those urls again?
Which are the best practices to do so?