and some of those plugin is not perfect for SEO (on page) and plugin might not working with wp upgrade too.....
this is what i headache with, i think is abt time to learn Joomla or drupal :)
I have one huge and two tiny Joomla sites, and three medium sized Drupal sites. The three Drupal sites are going to become Wordpress sites very soon.
u make me headaches now :)
u can have a look of my temporary try out, two wordpress with same theme but different color ...
http://www.drive.my and http://www.drive.my/wallpaper :)
I'd lean towards Wordpress, because of the plugins for the classifieds and eCommerce capabilities.
vB 4.x looks nice on my test site, but I don't think it's what you are looking for here.
I use WP for my blog and know you can use it to build static sites, but Joomla or Drupal or some other "real" CMS would likely be a better fit for a site like the one you're describing. Yes, you can hack something together using WPMU, but it's not likely to be nearly as usable as it could be. You're trying to force a square peg in a round hole IMO.
Joomla is about as easy to learn as is WP. Drupal IMO is much more complicated. Most LAMP hosting companies like GoDaddy have a one-button click install for Joomla. You can actually learn Joomla using a Windows machine by using XAMPP. It gives you Apache, MySQL, PHP, and a few other things running as services on your Windows machine. Easy to install and get running.
I honestly believe that from the CMS systems that you mentioned here,Drupal is the most capable system for a site of your needs,but the problem with Drupal is,that it isnt really meant to be a out of the box solution,its more like a CMF then a CMS,and because of that,you either have to be a programmer with some good php knowledge or hire one that will do the tweaking for you,which is too much work for most people creating a small site.
With Drupal and the necessary knowledge,the sky's the limit,but without it,well lets just say that you will encounter a lot of problems along the way.