Have you run across a problem that requires the attention of an Administrator?
The fastest way to catch the attention of administrators in general is to post an alert to the
Administrators' noticeboard (A.N.). Administrators go there all the time to see what is up with Wikipedia; one of them will see your message and will take immediate appropriate action. Experienced editors hang out there too and sometimes will answer a question before an Admin gets to it.
Another option is to paste a {{admin help}} template (with the four curly braces) along with your question on to your Talk page and an Admin will stop by shortly.
What is an appropriate length for a Wikipedia article? This is discussed at Article length.
An article can be as long as 10,000 words or more, if there are enough sources on the topic to provide for that much content. Undoubtedly there are articles that reach 20,000 words. The recommended maximum length is around 100kB of text. There is no standard for minimum length, an acceptable stub article could be as short as three or four sentences.
If you look at the menu on the right-hand side of any page on Wikipedia, there is a link to Page information. Clicking on that link shows lots of information about the page including its total size as well as how often it has been viewed. There is also this tool - you just copy and paste the text into there, and it counts it for you.