Need a realtor for a craigslist find?

[Mia P.]

Hi all!

My husband and I are newbies, but we're going to view a duplex this week that we found on craigslist.  I've been in extensive contact with the seller and the property manager, but now we're beginning to get overwhelmed thinking about ALL THE DETAILS before we put in an offer or close.  

First, we don't have a realtor since we've found this property ourselves.  BUT do you think a realtor is needed just to make sure we file all the right paperwork?  Can we just submit an offer with a contract we write up ourselves?  

Once the offer is accepted, is there anything else that a realtor would provide that would save us headache?  Like finding a title company, figuring out transferring the leases, or working with the mortgage company, etc?  

Thanks!

Mia