I think you are answering your own question here - if you can't find reviews or much info online then....

I agree with the above that Quickbooks Online (QBO) will work for you.

Online title search companies.

Once you draft it on zillow, use the same description, pictures, etc.

Pro: In addition to MLS access your brokerage might provide access to other resources such as detailed online assessment data not available free to the public. 

The address was submitted to their red book and now shows up online as official address when I try to ship items from Amazon or similar websites.

All your first set of questions can be answered by looking online or calling several local competitors.Your accounting questions though, show such a lack of basic knowledge that you probably shouldn't be doing this until you have more experience.

Well the drafts are in!

I keep reading different things online.

If you aren't sure who to choose from, ask each of them for a meeting/consultation to break down your goals, the market, and the acquisition process.Once you've selected one, have them draft the offer for you and take it from there.The best agents are responsive, knowledgeable on the local market, have a strong supporting team (i.e. lenders, title, inspectors, title, etc.), and know how to put together a deal.As @Michael K Gallagher mentioned, you'd want to clarify whether or not your agent is also representing the seller.