Most of your bullet points are just starting points but the real question is how do you want it finished. 

However you dodged a bullet my friend.

I am trying to figure out if it would be worth it to just bite the bullet and ADU the basement because of the appreciation that I will receive.Interestingly, this property was on the market for over 100 days because the seller was firm on the price, but I was able to negotiate it down a bit.

A bad area on the other side of town that unexpectedly moved into my neighborhood after federal law enforcement decided it was time for a crack down on gangs, who just relocated to my hood.A bullet through my bedroom window.A drive-by shooting 1 block over that I only woke up to at 4am after hearing a woman screaming outside her house.A friend managing similar properties across town clubbed on the head as he stopped by to collect rent, waking up hours later in the stairwell, pockets emptied. 

Otherwise, because a guest has to write and request, I know that we have dodged MANY bullets by not allowing IB.  

A mili is okay when I'm established, but I only got so many bullets to shoot first. 

You may have dodged a bullet if you really forgot to check and verify all the items.

Maybe i bite the bullet and try PM and then if i really dont like them incan either take back management or sell if its just too much.

Almost bought myself a property with a major leak because the seller sent proof with receipts but I dodged a bullet when I conducted my own re-inspection!

Bite the bullet and spend the money and use someone that specializes in the nuances and intricacies of evictions, especially in Commiefornia.