Should I use my current LLC or Start a new one?

[Chad S.]

I just bought my first property and will be closing next week. I currently have an LLC here in IL that I gave a vague name to and planned on using it to make consulting money. Now, I don't do any consulting any more and only use that LLC for my Amazon Associates affiliate website. Which is basically a zero liability 'business' where I send people to amazon and get a small % of their revenue. I really don't need an LLC for it. Could I just create a DBA for my REI company?
A 2nd question I have is about organizing bank accounts. My LLC has a Chase business account/credit card, and my personal bank is Ally. Could I create a new checking/savings accounts under Chase or Ally for my REI business? I really like the 1% interest I get with Ally checking and would like to utilize that to store excess rental income.