Whether you're acquiring a property, securing funding, rehabbing it, refinancing, or selling, understanding the process and having a clear strategy is key to success in this industry.

I'll add my personal process.

Generally will cost you about one month's rent, and some of that amount may get paid from your listing broker to the tenant's broker that brought the tenant resulting in a successful lease agreement (this benefits you because you are essentially offering financial compensation to other agents that represent who you need: tenants!)

As long as your extended family member has no problem being involved in the mortgage process you will not have issues with the financing. 

The challenges I faced in the process was negotiating with private lendersDid you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Congrats on your early success... have you been finding your own deals or are you sifting through deals from wholesalers, investors, agents, etc.?

Talk with your RE agent about properties your interested in and try to visualize the cost, process and time invested.

That shaves 4-6 weeks off the process. 

You could then sign a retainer with said attorney who handles the rest of the process (title searches, filing fees, etc.).

After that, you know what the process looks like, and it will go a lot smoother later on if you want to sell the condo to buy a second multifamily home.