3) This is my first time - What questions should I make sure I ask an electrician and plumber to ensure they'll do a good job? 

Your property manager should also be able to plug you into their network of LOCAL contractors, plumbers, electricians, REALTORS, lenders, lawyers, REIAs, buyers and sellers, tec.

I have great contacts for property management, electricians, plumbers you name it.

I got overwhelmed by the sheer expense of calling separately a plumber, electrician and carpenter for different jobs.

They are boilermakers, welders, pipefitters, electricians, inspectors, crane operators, project managers, foremen, etc. 

Anyone got a go to electrician in Austin?

There would be no impact to other units.Now, I'm no electrician, but here's one way I could see a problem: 8 condos share 400 amps of service, but each has a panel with "100 amps."

We met a wonderful plubmer and electrician we are training as a GC, who is working on the next rehab with us!

My husband is an electrician so he felt like he was knowledgeable enough to skip inspection (I don't know that's typically recommended) but it helped the offer get accepted. 

A few years back (2003) a contractor, referred by the insurance company after a kitchen fire, sub contracted an electrician (paid in full but never got a receipt) but the main contractor was always threatening to lien their house.