I would recommend that you find a local property manager who deals in this size of asset classes, and talk to them about how you would turnover units at this scale. 90 units is no joke so I would leverage your property manager for their GCs or remodeling companies who can help you out with this.

It's just that a portion of their rent is paid by section 8.

What I am wondering is if there are investors here looking to partner with someone who could act as their STR Manager, but could also contribute a small portion (comparatively to the area) financially, and also contribute in the form of sweat equity (We have family experience working in contracting/carpentry/design). 

Then working with my mortgage lender to take a portion of money from the LLC's business account plus a specific amount from my personal account?

Of course though if I do have to pay out of pocket for a portion of the mortgage payment I would be okay with paying less than 500 a month.

This is a mixed use building, total size is about 10,000 sq ft. 2,500 sq ft of office space, and 7,500 ft of warehouse / light industrial space.

If not, the initial cash flow will be the highest you will ever receive, and you will have a continuously declining standard of living.Population Size - Greater than 1 million.

It could be you need to bring on a partner who can sign on the loan with you, which means giving up a portion of the equity.

We had some pretty good sized hail in RR and parts of N Austin so you may want to look into whether your area was hit as insurance might buy you a new roof.

Even if you are willing to work for free, the bank will assume some management fees for your loan sizing.