@Edgar Verdin yes I do most the properties I invested in was built in 1890 to 1925 and it’s tons of fun with Knob and tub wiring and cast iron pipping (which is rare since they been updated after then ) . their built a lot better in my opinion stone structures for the most part 

Ironically in both those examples, I was outbid and it wasn't until 1st buyer's financing fell through I got the deal.You may have better luck networking with wholesaler's, driving for dollars and getting your name out there for the best deals. 

But as your portfolio grows, managing your units can then get quite time consuming and can start to feel like a headache.

It's extremely time consuming and I'm wondering if there are better tools to help automate the process?

You ensure they know by driving the point home.Yes, that process is time consuming, but would you rather vet 10 applications, denying 9 of them because those 9 people didn't bother reading anything other than the rental price?

We bring in about 12k/month after taxes and will have all of our consumer debt paid off in July.

"Deals" may start to pop up here and there as consumer confidence rides the recovery wave, but the timing just isn't right (in my opinion). 

Ironically, he is one of the two NYC CPAs I would recommend, and the other one also replied to your post: @Nicholas Aiola.

If you can avoid lead paint/asbestos and cast iron/clay pipes, that’s usually a good thing.

One deal like that one could consume you and leave you with a whole lot of nothing.