Some high and lowlights:- I had one tenant that brought German cockroaches in and then blamed it on me- Same tenant asking if her daughter can visit but failed to mention it was 5 more very noisy people- another tenant having constant loud arguments with his gf- tenant saved some of my stuff when the house flooded due to a pipe burst and another time during a monster rain storm.

I see people doing this wrong in Michigan constantly.

When cycle gets tougher then those marginal agents sales dry up and they go back to that j-o-b especially since they did not save and spent all their money on trips, bigger houses, nicer cars,etc.Good LuckI hope you are one of the few that make it long term. 14 years in the business and still having record sales year after year.The best nugget of info I can give is constantly out learn your competition.

I'm a GC as well and did the math, the Heloc would save considerable interest because it would average on 33% of the balance borrowed at any one time (and thats assuming constant deal flow).  

A mid-term rental could be an great option during the 6-7 months you're away since it appeals to traveling professionals, remote workers, or individuals relocating and offers stable income without the constant turnover of short-term rentals.

Your properties have needed constant work, making you negative for the first year. 

Is there an app that can streamline this process by synchronizing updates across all these platforms, thus alleviating the need for constant manual updates?

This constant worry about honesty and transparency can really take a toll on the property owner. 

Dogbarking: Neighbor complaints of constant dog barking or aggressivebehaviors will result in a notice and possible lease termination.

If they just represent first time single family home buyers and aren’t constantly finding off market properties and reviewing deals, you’ll find a better investment through someone else. https://www.kiavi.com/blog/out-of-state-real-estate-investinghttps://learn.roofstock.com/blog/out-of-state-real-estate-investing