Fitness Boot Camp SEO Project!

Basically I run a residential fitness & weight loss boot camp and things are going pretty well. I spend quite a lot of money each month on Google Adwords and understand that I will need this to continue. However, I am require my website to rank higher on Google nationally for the following key words: Boot Camp (current position 27 Page 3) Fitness Boot Camp (current position 13 Page 2) Weight loss Boot Camp (currently position 6 page 1) Boot Camp Holiday (currently position 5 page 1) Boot Camp Retreat (currently position 6 page 1) I currently rank on the first page for Residential Boot Camp, Reboot Boot Camp, Dorset Boot Camp, Poole Boot Camp and many others however these are far too focused as I get my clients nationally. I write for several magazines - Homes magazine, Dorset Wedding Magazine - so have dozens of fitness articles that can be used for blogs, press releases and Twitter although don’t know who to speak to to get these articles on the World Wide Web. I also have about 20 videos on my You-Tube channel and understand that You-tube and Google have a close relationship but am unsure how I can it optimally work for me. What are the chances of getting Reboot ranked No.1 on the front page for the aforementioned key words? Can you help me achieve this? Are you willing to show me what needs to be done so we can work on it together to speed the process up? I am quite desperate and am in discussions with several SEO companies at the moment who are making all sorts of promises that conflict with each other. I look forward to your response. Kindest regards