Step by Step vB transition guide?


I'm currently running a fairly stock install of vB 4.2 with the CMS. Is there a step-by-step guide anywhere of transitioning to XenForo? I'm assuming these are the basic steps, just want to make sure I don't forget anything.

1. Purchase XenForo
2. Install XenForo
3. Install portal add-on (for CMS like funtionallity)
4. Import vB data (users/threads/posts/PMs/etc)
5. Install redirect scripts to maintain SEO?

Number 5 is the one I'm most uncertain about. I want to minimize impacts on search rankings. I'd like to install xenForo in a different directory than the current vB install if that won't complicate it.

Are there any steps I'm missing?