If you search and read some threads here you will see a lot of viewpoints. 

Since reasonably priced triplexes or greater seem to be getting hard to come by in the greater Bangor area, I've expanded my search south a ways and found there to be a bunch of multi's coming on the market in the Augusta area priced pretty reasonably. 

what made you select them as your contractor?

Quick search on the forums will indicate that all 4 areas you've mentioned have solid activity (buy and sell). 

Has anyone had a success using the online auction system, and do you pay to do a title search for every bid, or do you do your own due diligence free free sources?

Idea to find videographers in your area:- Search for video production companies online.  

@Luis Valdez - That's a very generic question...to which there are a plethora of resources available about the BRRRR method if you search BRRRR in the search bar at the top of the page. 

My husband and I are considering accepting Section 8 again at  a few select properties.

In the past, when I have created an EIN for an LLC, the IRS has asked whether the LLC should be treated as a corporation or partnership, for which I've only ever selected partnership. 

Search and read for any questions you have, if you don't know...ask and other people like Belinda Lopez and many other investors will help.