Looking for the perfect theme. Testimonials and Reviews

[RobThePlumber]

I am looking for a theme. I would like to make a website that individuals from my community can log into and rate local companies. The companies would basically be contractors (plumbers carpenters etc.) and services (local MPP and city hall). I would like it that the individual would make an account and a username. The theme would need to have space or make it so I can modify it so I can put my adsense ads in. I do not want to have local companies advertising. I want to make it unbiased and honest.

This is how simple i want it,
Person comes to site.
Click on the category (plumbers, carpenters etc)
Click on the company from the list of all contractors in that category
Read all the reviews and comments left by past customers.
Have the option to leave a review or testimonial

Pretty simple.
I would like it to be clean and simple (not too many graphics)
I have a little bit of html knowledge ( I can figure out how to make simple changes)
I am familiar with WordPress
Please contact me rob@plumboogle.com