If you are "close to the limit" that means you're in danger of 1.) doing too much of something or 2.) running out of something. Examples: "I can't drink any more alcohol. I'm close to my limit."-->I can't drink more alcohol because I will get drunk. "I can't spend any more money this weekend. I'm close to the limit."-->I can't spend more money because I don't have a lot left. "Don't play any more loud music. Mom is close to her limit!"-->Mom is annoyed by the loud music and she will get angry. People use the word "guys" in order to sound informal. It sounds like this person is trying to sound casual, like he's chatting with someone.

It sounds like this is a part of a larger body of text. Out of context, I'm not sure what it means. You provide the paragraphs/context for these sentences?