Helvetica is one of the most used fonts in history, it's used in countless logos. Which is great because it's recognizable, but try to vary your use of fonts. IMPORTANT!!! Use serif fonts for your main body, and only use sans-serif for the title and introduction. Serifs ease readability and sans-serif grab attention.
Other than that it looks rather good. Would use kerning on the letters, because the difference in length between each character is quite annoying to the eye.