Those are the premier Seattle meetups with true experts in the Seattle market.You popped into a forum, new to the site, asked a question, and then committed the biggest newbie mistake in the book - you backlashed against the sound advice because you know better.

That's a good incentive for them to leave quickly.2.

I believe the biggest obstacle you will face is the need to rely on a 3rd party builder for a 4 unit building.

Lots of BS excuses and finger-pointing at their hired out Accounting Team for this.My biggest concern now in terms of this one investment is that they are way over-leveraged and are in a position where they will need to refinance soon which will likely result in negative cashflow with interest rates where they are at.   

The option fee should be enough to create an incentive. 3% to 5% are common.2.)

You will likely have to borrow through an LLC so just know that is an additional cost up front.The biggest thing, at least in my case, would be finding the multiple deals that work for you, that you can take down at the same time.

Job and population growth are some of the biggest factors for appreciation. 

If they know they have a landlord who will ask them for rent, and then disappear for a few days without any repercussions... that really doesn't sound like any type of incentive for them to fulfill their obligations of the lease contract does it?

There doesn't seem to be any incentive to buy when you eventually want to sell.

The biggest difference with DSCRs is usually 1) prepayment penalties 2) more points 3) an affidavit that you cannot occupy the property 4) covenants and agreements regarding the requirements and rights of the lender to protect/preserve the collateral that may be more aggressive than Conventional.