Keyword For My TV Webstore

Yes, you are right!
My TV Webstore is only a small exercise for beginners. It's just putting a Headline on store page developed by amazon.com.

But you know, there are a lot of learning inside. Using the page editing tool, uploading the file into host, managing passwords for the accounts. It is all confusing for beginners.

I spent most of the time to define the keywords. A friend told me this is the critical part of the page that determined the visibility of the page be search engine. I like you to comment on this.

I use google keyword tool to get the keyword idea. After hundreds searches, I decide to use the following keywords:

For the index page: tv, lcd, hdtv, samsung, panasonic, sharp, aquos, high definition, television, cheap, sale, discount, deal, buy.

For samsung40 page: tv, lcd, hdtv, samsung, samsung 40, samsung lcd, ln40a550, ln40a650, high definition, television, cheap, sale, discount, deal, buy

For Samsung52 page: tv, lcd, hdtv, samsung, samsung 52, samsung lcd, lnt5271, lnt5265, ln52a750, ln52a650, ln52a550, high definition, television, cheap, sale, discount, deal, buy

For sharp32 page: tv, lcd, hdtv, sharp, sharp 32, aquos, aquos 32, lc32d43u, lc32d64u, lc32d62u, lc32gp3ub, lc32d44u, lc32sb24u, lc32gp1u, lc32gp3ur, sharp lcd, high definition, television, cheap, sale, discount, deal, buy

For sharp37 page: tv, lcd, hdtv, sharp, sharp 37, aquos, aquos 37, lc37d64u, lc37d62u, lc37d43u, lc37gp1u, lc37d44u, sharp lcd, high definition, television, cheap, sale, discount, deal, buy

For sharp42 page: tv, lcd, hdtv, sharp, sharp 42, aquos, aquos 42, lc42d64u, lc42d62u, lc42d43u, lc42d72u, lc42d64u, lc42d64pk, sharp lcd, high definition, television, cheap, sale, discount, deal, buy

For sharp52 page: tv, lcd, hdtv, sharp, sharp 52, aquos, aquos 52, lc52d43u, lc52d62u, lc52d64u, lc52d82u, lc52d92u, lc52se94u, sharp lcd, high definition, television, cheap, sale, discount, deal, buy

Is anyone can help giving a comment or view regarding these keywords? Do I choose correct keyword? What is the ideal number of keyword on one page?

Any comments are highly appreciated!

AB