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Thanks Alice, great advice Dan

Hi danfk, Daniel's response is exactly right (thanks Daniel!).  We don't offer that feature at this time, but I'll definitely pass your request on the team to see if it's something we can add down the line. Also, did you know we have a feature request forum? It's a great place to share your ideas. Other people can vote on them and it will help us determine priorities. You should check it out: http://seomoz.zendesk.com/forums Please let me know if you have any questions!

At least part of the answer lies in your competitive landscape.  If you properly optimize just a couple variations as primary phrases, add in other variations as secondary phrases to include within the content, get inbound links spread across both the primary and secondary, you should show up for several if not all of the variations you've listed. Where the competitive landscape factor comes in is this. If you choose options 1 & 2 as your primary, then 3, 4 and 5 as your secondary, and any competitor targets 3 & 4 as their primary and does full on optimization, they'll likely rank higher for those.  But that's only if all other factors are equal. The best way to deal with this and not end up in a vicious cycle, is to leverage PPC ads on the full spread while you focus SEO as I've suggested. If the organic competition is weak, you won't have as much of a battle. Oh - I forgot to mention that I know this because I've worked on U.S. based rental sites - one of the largest regional rental sites, and one of the top two national sites.

Dan, the meta description is your chance to pitch to your customer and nothing more. It is entirely possible to throw away the benefit a #1 ranking can give you in click through if you meta description lets you down. Also for me it is very important to keep within the 70 characters limit for the page title as having overly long titles can not only not read correctly in the search results but you may be diluting your affectiveness on targeting a page for a certain topic both to the user and the SE's