How to properly cite when using most of the text verbatim
It isn't plagiarism if you don't represent it as your own work. If it is cited, it isn't plagiarism. However, copying complete articles is fraught and comes up against copyright restrictions which can result in either legal action or lawsuit. You should talk to someone locally about what is allowed and what is not. Librarians are good at that as is the legal department, if available, at your institution. As to how to cite, either of your options seems fine. They both indicate that you are quoting, not just paraphrasing. 

Just be sure you are covered or willing to take the risk of possible censure. 

Contacting the article's author may give you additional guidance and possibly permission.