Vehicle listing

Hi,
I am in the process of putting up together a Vehicle listing website. I have been testing this plugin and it almost has everything I need. I can understand that I will need the Extra Field module and I am happy to buy that. I have few questions hope you can answer;
1. If I purchase the Extra Field module, In the “Show Ad” page, Can I make visible fields like Model, Make , Year etc?
2. I hope above options can make visible/hide from the search form?
3. When you click on an image it is opening individually in a light box. Is it possible to make it continuous with an navigation link in the light box?
4. In the “Show ad” page is it possible to add more Individual Top level Categories so a visitor can drill down the listing more specific? e.g Cat 1 type (new, used) Cat 2 Make (nissan, toyota, BMW)

Many Thanks

http://wordpress.org/plugins/another-wordpress-classifieds-plugin/