Quick Interview Questions(Please Help!)

Hi guys,

I have an interview for a financial analyst position on Friday. I had a phone interview last Friday with the hiring manager and it went great. Unfortunately, due to my nerves I failed to take notes in regards to what he mentioned the job would entail(a little different than what is in the job posting). I have a murky idea of what he said. Would it be a bad idea to email him and to get confirmation on what the job will entail? I want to know just so I know how to best prepare myself for the interview. Or will I come off as someone who is incompetent?

I also messaged someone at this same company(VP in corporate finance) to try and set up an informational interview(before I found out that I would be interviewing with the company.) Should I pursue this interview and just go about it without mentioning my interview this Friday or should I pounce and leverage this informational interview, saying that I have an interview this upcoming Friday and wanted to learn about the division and culture at this company. I don't want to come off as some douche that is just trying to take advantage of this informational interview opportunity.

Thanks for reading guys. Any help will do.