I generally agree with George and Nicholas.

I also think that the strength of your site vs the strength of the competition is important - along with the difficulty of the keywords.

If you are going after long tail keywords against weaker competition, then six shorter content pages targeting six different keywords would be best.  However, if the competition is strong and the keywords difficult then one big kickass page will have the best chance.

Finally, presenting one comprehensive article with all of your text and photos on one page is better for link-earning than breaking it up into six short pages.

This is a complex question asked simply.  We could also consider the ad impression opportunity of getting the visitor to click through six pages.

Add links to your site within the .pdf

You can also add your branding to the .pdf

Nigel's suggestions are right on.

We redirected subdomains into folders on the main site and the results were KICKASS.     KICKASS.  We started producing a lot more traffic and making a lot more money.