In addition you'll have to make the monthly interest only payments.

There is additional reserve requirements when buying more than 1 unit, so get up to speed on those so you are prepared to have those in place at the time of closing your loan. 

These are professionals with additional training and a stricter code of ethics.

Some random kids from the nearest high school?

basically Houston doesn't believe in general licenses. how to hire onehttps://www.biggerpockets.com/renewsblog/2015/03/1...as stated above try to find a bonded/insured contractor.managing your contractorshttps://www.biggerpockets.com/renewsblog/2010/04/1...additional tiphttps://www.biggerpockets.com/renewsblog/2015/05/1...paperwork to help make sure you don't get screwedhttps://www.biggerpockets.com/renewsblog/2010/04/0...Thoughts?

One flat tire, one sick kid, one broken leg.

It's not in my current lease, but I will have several units open over the next month, so it's still an addition to my lease that I might want to add.

And also my father’s back is damaged because when kid he almost killed himself hiking.

In addition the majority of the not so experienced are either out of state (OOS) or planning on going OOS.So I am not recommending against going to the San Diego BP social as much as 1) setting an expectation 2) suggesting you may want to go to a meetup maybe associated with an RE investor club.BTW there used to be a near monthly BP Meetup at various RE investment properties. 

.- Have kids: Hire them, they pay no tax up to 12K each and you get to deduct 12K.