Dynamic Image Scroller & Content - XML vs MySql vs Both?

Hi,

I am getting to the last and hardest part of setting up my new flash site and need a little design advice. The last piece of functionality i want to add is a flashnav type vertical scroller which naturally displays a bunch of thumbnail images (its a real estate site so each thumbnail would represent an apt). When one of those images is clicked i would then like to load a swf into my main content area which contains a large image of the thumbnail clicked and other thumbnails and dynamic content relating to that apt such as a description as well as various other items like beds,baths,price etc. Finally my question is what do you think is the best way of going about this. Should i use an xml file which contains all the fields i would need for an apt (could be as much as 8 images, desc, and 5-6 other simple text fields per apt with 10-20 apts)? Should i store all this info in a mysql db and then use php to pull it into flash? Or perhaps a combintation of the two?

Im looking for the solution that is easiest to create and add/maintain. :}

Thanks in advance