I would hire your iPhone.

I hired Alex Lozano of Winter Accountancy to do my taxes which included rental property schedule E; he specializes in Real Estate accountancy.  

Here are options including install- 1/ used good condition 3 year old Air handler never opened, 8 year old used compressor, wireless thermostat - $2400 2/ $2700 for 3 year old air handler never opened, 1 year old used compressor, wireless thermostat 3/ 3 year old air handler & wireless thermostat - $17004/ we supply units - he installs them for 1300 5/ everything brand new with warranty and install for $4200Thank you.

I am thinking of just hiring the experts myself, rather than hiring a General Contractor to hire the crews.

For instance, a property manager can be hired for 5% to 10% of Gross income. 

Not sure how old the home is but you definitely want to check out the roof, electrical, water heater, heating and air conditioning and plumbing at the very least.

I live here because my family is here. my friends and my wife's and child's friends are here, and my RE investments are here.San Diego has a lot of nice features (weather, recreation, beach, mountains, desert, etc.) but it is also crowded, air could be better, and it is not cheap. 

And, when in doubt, hire a professional!  

Also do you still do the PM yourself or you e hired a company?

For Florida there is a excellent book with all the forms by Warda called Land Trusts in Florida.You can also look at Mr Land Trust aka Randy Hughes https://www.landtrustsmadesimple.com/I would highly suggest that for your first land trust in that state you either spend the money with a comprehensive course specific to that state or hire an attorney knowledgeable for that state.