How long will it take to move up ___ Positions

Keep building solid backlink and the ranking should rise and be more stable. If it's as competitive as you say, this will likely take a few months or more to get you up there.

Link building is the process of getting other web pages, and web sites to place a hypertext link to yours, which generates direct targeted traffic to your site, while more importantly increasing your search engine visibility and rankings. Building links to your site should be an ongoing process of research, communication and attaining quality in-coming links to your web site.

Here are some link building techniques:

Link Exchanges
this technique is commonly employed to exchange links with other web masters. Where you place a link back to his/her site from your web page, and they'll place a link back to yours.

Article Writing and Submission
Another technique is by creating and distributing information and content to other web pages. There are many web sites that accept article submission and offers for distribution as indicated all over the Internet.

Press Release Submission
It is a way to deliver latest news events within your company. However, it is written in such a way that it will rank well in the search engines for your keywords and provide your website with important back links that will also help boost its position in the search engine rankings.

Directory Submission
Is a very cost-effective way to get links and helps to establish a foundation for Internet marketing.

Social Bookmarking
is an online method of storing, organizing, sharing and searching bookmarks of selected web pages. A bookmarking site allows members to save links they have an interest in, as well as sharing them with others web users.

Forum Posting and Blog Commenting
By posting regularly to these forums and blogs, and properly utilizing the signature tags, you can generate much needed back links to your web page which helps with search engine optimization for your site.

I like social bookmarking and when done carefully, it works wonders.

You should increase number of backlinks, bookmarks and directories, but not much. Do it proportionally every week. You should work hard. And you'll get reasult!

keep building backlinks as much as possible

" How long will it take to move up ___ Positions"
SEO is a game in which any thing happened because you do not know more about google Algo...you only use the theory of optimization so site may rank in 1 month or takes more and more ........but i only w8 for three cache of google......

Your keywords are really competitive and hot in the market.You will surely get a lot of traffics in any marketing way that you do.

backlines until your fingers hold