Chicago formatting is used mainly for historical research papers and uses footnotes at the bottom of each page rather than in-text citations and works cited or references page.
You need to understand completely that you are not writing a descriptive essay. A research paper is an accurate and thorough work, which is based on facts details. You cannot add watery text about anything into the paper. Your statement should be supported with examples or reference other profound research and academical works.
Any information that doesn’t fit within the framework of your outline, and doesn’t directly support your thesis statement, no matter how interesting, doesn’t belong in your research paper. Keep your focus narrow and avoid the kitchen sink approach. (You know, the one where you throw in every bit of interesting research you uncovered, including the fungal growth in the U-joint of your kitchen sink?) Everything you learn may be fascinating, but not all of it is going to be relevant to your paper.
A single main point doesn’t have to be kept to a single paragraph, especially if you are writing a relatively long research paper. Main ideas can be spread out over as many paragraphs as you deem necessary.