Hey Mark
Good idea? Yep!
Basic process;
- Plan out the structure of your new site.
- Map the old pages to the new pages.
- Create the new site on a development or local server (some folks will build it right on the main domain, but just keep it hidden - I don't recommend that). If using a dev server, use your privacy settings and "discourage search engines from indexing the site" - you don't want the dev site indexed!!
- Prepare your 301 redirects (as Kade suggested, I actually don't think you should keep your URLs the same at all - now's a good time for improvement).
- Move WordPress from the dev environment to the new server.
- You basically "pull the plug" on the old site by removing index.hrml and letting index.php (which is part of wordpress) take over.
- Put in your 301 redirects ASAP.
- Crawl the new site for 404s
- Monitor WMT like crazy for a few weeks looking for any missed redirects.
I definitely recommend getting a dev to assist you if you don't feel comfortable!
Hope that helps.
-Dan
In this scenario, the ecommerce platform would serve the homepage? What would WordPress be doing in this situation? Thanks for clarifying and I'll try to help out!