Starting a new website need help?

I want to start my own review company of a certain type of product. I already the purchased the website and have my plan together. I want people to be able to go my site, rate the product. I need them to register before they leave a comment. I also want to have a forum where member can discuss different topics. What is the best way I should go about to start this site in the lowest start up cost possible? Is there a template that I could use for the layout? I was thinking of starting it out with blogger and then posting different products but I want it have more substance. DO u have any ideas? Best free or low cost hosting? Just any ideas on helping me get this site going. Thank you 

I recommend one of these:

http://www.webhostingtable.com/

Powweb currently has the best offer.
Their standard price is $7.77/month ($93.24/year)
but they have the 50% sale right now.

Disk space: Unlimited
Bandwidth: Unlimited
A Free domain name
Unlimited domains and subdomains

Price: $3.88/month ($46.56/year)

Their hosting plan includes web builder, so you can create your site just by drag and drop (without any programming), or you could install WordPress (easy, one click install from their control panel), choose a theme that you like, and start adding content. WordPress is the most popular blogging platform, used by majority of top bloggers. It would be great for product reviews. There are thousands of themes and plugins which allow you to customize it anyway you want. Powweb also includes one click install of phpBB forums so you can set it up easily.

WordPress Affiliate Review Templates