Recently I noticed I get to 0.7 or 0.8% at best (i.e. 100k purchase price, $700-800 rent per month). 

.: I have noticed a lot of realtors, newbies, and even folks that have been buying properties for a while and should know better telling folks to find off market deals. 

If the lease is ending be sure you have given the proper notice of non-renewal of the lease.

Something I noticed that is making me doubt about making an official offer is that it seems to be in an area with high crime.  

If you end up giving them the notice to vacate do not offer the option to sign a lease.

Calls to the company go to a voice mailbox that is full after the 6 month date.I have created a Notice of Contract Default that I will be sending to them via their lawyer.

I noticed I had vacancy in the column twice, so I reduced both to total 8% like you suggested.

You will get A LOT of appointments by sending A LOT of hard target mailers (like the ones that say 5th notice and such, drive return calls), but it's a lot for a little.

This is the breakdown:2 tenants on month to month leases ~$250-$350 less than market1 long term tenant (15yrs) is now on month to month lease and is paying $1500 less than marketAfter consulting with a couple of people and doing some research, it sounds like anything over a I should apply banking rent raise and submit a 60 day notice (all of these units fall into that category).

Can't make it on short notice but look forward to attending one in the future!