We signed P&S agreements on 6 different properties totaling 20 units approximately 8 months ago and received a call today that the price we thought we were buying at has to-be increased on average 13% due to the increased cost of construction.

It could be a nice opportunity however I would be certain they will want you to make up the difference between $250,000 and whatever is left on the mortgage which btw in my opinion should be done with lender's knowledge and approval. 

The marketing copy and photo captions, professional photos, and weekly activity on the OTA listing, makes a big difference in bookings.

From my experience, they are two different mindsets.

The lead avatar will be different for every market.

I know It differs lender by lender but I’m curious what CC’s are like with DSCR.

Another key benefit is diversification; an SDIRA allows you to include real estate in your portfolio, reducing risk by spreading your investments across different asset types, which isn’t possible with a standard IRA.Moreover, assets in an SDIRA often enjoy protection from creditors, adding a layer of security to your investments.

Creative Financing" can mean a lot of different things depending on who you're talking with. 

Thats far different than a 100% capital call to get out of a high-leverage loan.

Each jurisdiction is different, but typically include a substantial deposit due same day up to full price deposited that day.