Even small improvements never go as planned, bigger jobs will have delays and unforeseen problems. doing this with tenants in place could prove to be disastrous.

@Jon Lee I actually just left my Regular 9-5 job early to go to a Lunch/Meeting at 11:30am.

Do you know any good contractors who are reliable and do a good job?

Dave with Pro Interiors does a good job. 

The doors are grade level with only a 10' clear height.It is currently 30% vacant but I've been told this is because they are using a big firm to lease and manage the space, who apparently aren't doing a good job on these kinds of properties. 

A small repair job could turn into a very expensive job because of their failure to notify you of any problems.

Nice job, certainly not what I would suggest, but I’m glad that worked out for you. 

The subfloor main level was unusable and It was sight unseen....total gut job $100k rehab.

While that's possible in a series LLC, you start making the accountant's job quite difficult and it may make sense to have separate traditional LLCs.

At first I'll be doing it part time as I have a full time job.