d) set mouse traps and check them often (not a set it and forget it option and dead animals can stink, hard to check traps in a crawlspace regularly no?)

Bedding and linen replacement fairly regularly.  

Seem they paying more then regular remt Consider how much more they're paying you.  

If you sell property regularly as a primary business, or in the ordinary course of your business, you could be labeled as a dealer/developer and have your property classified as inventory rather than a capital asset.

Something has to give: your RE side hustle, your regular job, or your family.

I still get regular blog type emails .. but when i log in.. its blank slate.

I am looking at a Duplex, am wondering if I could live out of one side as my primary residence for a year, and Airbnb out the other side during my first year... and then after my first year, regularly rent out my side, or Airbnb both sides... does anyone know the rules to this? 

I currently live in Sioux Falls, SD and I help out of state investors on a regular basis.

There are a few that get posted regularly on the events page on biggerpockets as well as on meetup.com 

I would sit down with your CPA and an attorney that regularly works with investors to get a solid path going forward for you to scale.