However, i would like a person with multiple rentals to help guide me to avoid some simple mistakes.

This eliminates the need for a key and it prevents a tenant from ever locking themselves out.

In my opinion, this is a huge barrier for many new investors- they think they understand value better than a seller might and they try to convince someone their property is worth less than the seller believes it to be- that's a rookie mistake.

Even if you rent the house for $2,000 a month, you will still lose because of maintenance, vacancies, and the expensive mistakes common with newer investors.You can borrow up to 70% of the equity.

Start small and make your mistakes then.Don’ttrust me.

That eliminates most investors right there. 

They're more costly- not a ton, but if it eliminates stress for you, that might be the way to go. 

Luckily the family in my rental is paying $9000/mo (3x my mortgage) so I am gaining signifigant wiggle room for mistakes.

Good property management will help to eliminate tenant turnover.  

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