Commercial deal??

Hi All
I posted this similar message in the Beginners section as I am a very NEWBIE. At any rate, I’ve stumbled across what appears to be a good commercial deal. The seller appears to be motivated and I can make the numbers work (from the liabilities that I am aware of). However, I’ve only purchased a residential property and have NO experience with commercial properties. The property is in excellent condition (a little paint is all it needs now) This property is less than a quarter acre with two apartments that are currently rented with tenants that have been there 4+ years. One of the tenants is a section 8 tenant. The other part of the building is a small vacant space that was previously used as a fried chicken restaurant. I can make the numbers work with the small commercial space being vacant and then explore lease options after I secure the property. My questions are:

  1. Besides the 25% down (which I can acquire); what are the other pitfalls of commercial investing. Can I obtain a loan fairly easily as I have done residentially? (I am starting to check this out today)?
  2. I have not dealt with section 8 at all. Can you raise rent on a section 8 tenant? What are any pitfalls/positives with section 8.
    Any advice would be greatly appreciated.
    Regards,
    Art