Website to page #1 on Google

I have a website which is relatively new, approx a couple of weeks old. I want it to be ranked on page #1 on Google for just 1 keyword. The keyword I want it ranked for is actually a misspelling of a popular keyphrase, so it shouldn't be too hard to get it ranked. I will actively post content on the website and keep it updated. Now this is VERY important, I have worked with SEO companies in the past who wanted weekly or monthly payments, I paid and unfortunately there was no results - so I was out of pocket with nothing to show for it. I will only pay as it progresses through the rankings, so please make sure you understand this and to confirm your understanding, make it clear in your private message.