.- I recommend avoiding condos. 

My recommendation is get a self directed IRA and have the real estate be owned by your IRAYeah,  I have heard a lot about the self directed IRA.  

I recommend beginning with a turnkey property.

Also, can anyone recommend a reliable company for this?

For financing, I recommend you reach out to @Andrew Postell

Can you recommend a management software for managing 100+ doors I tried Cozy.

Don't be suckered into buying cheap properties - unelss you know exactly what you are getting into.Here's some copy & paste advice that applies to just about any Midwest rental market:--------------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

I'd like to be able to give a variety of options for the listeners along your recommendations and feedback on the options.

Hi Kwanza,Bay Tek (650-204-1512) would be a great starting point, but I’d also recommend reaching out to Adler Builders (650-398-9030) and Mission Home Remodeling (415-855-7269) for comparable bids.In San Francisco, you’ll need a licensed General Contractor (GC) to pull the necessary permits.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?