Catherine id highly recommend spending a full day or two consuming youtube videos that specifically go into detail about this process, theres so much to teach and writing this whole thing out would literally be a whole book.

Spending that much money and not having an ideal about whats gonna be put in place is not how I do business.If you notice on this draft from the architect.

Spend a few hundred dollars and speak with an attorney.

All that being said, beggars can't be choosers, and when you're going after your first property it's more important to get your foot in the door and learn the business than it is to make a killing on your first unit - i.e. if you have to make a slim margin to get a great case study, that's better than trying to charge 30% for something you've never done before and spending a year trying to convince someone to roll the dice on you.

Additionally, make a commitment today to at least spend a few hours a day learning about real estate investing.

In order to get the attention you want through online ads (which last I checked Facebook ads require such a wide range for the demographic that it is almost not worth it), you would likely need to spend literally thousands of dollars. 

What you should do just depends on you, what you're spending for the property, how bad do you want it, what other opportunities are there, etc. 

No need to spend a crazy amount on super nice finishes in neighborhoods like this unless you are trying to flip it/sell. 

I'm not an active owner in that I use a management company but I spend a good deal of time fixing/improving things myself so I don't have to pay someone else.  

@Ronald RohdeYep, I would be adding the same thickness of slab and only extending the portion of the warehouse only, not any office etc.