As someone who's spent the past 20 years building software to ingest massive amounts of random data, the short answer is, it's really difficult to get accurate contact data.

And if you base an offer price on that, you'll likely have an extremely difficult time getting any traction. 

BP has done such a great job of promoting SFR investing to the masses, that those masses have pushed up real estate prices to where it's now DIFFICULT to cashflow right away.Keep going, but understand you won't get rich in real estate overnight - it's a long-term wealth building strategy.For the short-term, recommend joining a few in-person investor meetings if possible, otherwise online ones.

Total time spent throughout the year may be significant, depending on the number of properties and amount of activities, but year end is no more difficult than any other time period they're doing. 

You could have 10 of these, and they get progressively difficult.  

OH is one of the states where lenders sometimes require that you buy out the prepayment penalty, which in turn will increase your rate and make it more difficult to cash flow.

I would just be careful hopping back in now as interest rates and low inventory are making it very difficult if you aren't finding your own off-market options to buy.

They are very difficult and expensive to move. 

However, in some cities, getting work permits is difficult and slow so it can really hurt the investors' timeline through no fault of their own.

However, without more information on what your preferences are, it is difficult to give you good advice.