You get what you pay for with a bigger firm that is cheaper.

Pay everyone more than what they make now at their construction job, be kind, and give them bonuses based on completion, and they will never leave.   

As @Dan H. has stated building and ADU can take a while to pay off and could affect the appreciation on the exit sale without a garage which could limit your sales to another investor. 

How do you pay for the tax and insurance?

Employment Incentives: Hiring tribal members can qualify you for the Indian Employment Credit of up to $4,000 per employee.5.

Your income isn't high enough for it to make sense as a rental and the closer you get to your residence limit the greater pressure you will have to sell it before losing your exclusion in whole or part. 500k right now can make $15k per year income with zero maintenance or tenant risks. 

Now I spend 5 years hoping they make their payments and somehow refinance to pay off the balloon. 

So I was paying under the market rent to live in the property, then moved out and rented my unit and it’s cash flow positive.

You must work at least 750 hours per year in a qualified RE business.So most people who have high-earning W-2 jobs outside of real estate won't qualify.But the unique thing about RE pro status is that even if you don’t qualify but your spouse does, you can both file jointly and claim the losses from your RE investments to offset your other active income together.It's an incredibly powerful benefit if you do meet the criteria.

Are you able to connect with wholesalers and lend EMD as advertised or is it proving more difficult?