Feel free to DM me.

I typically am working with suppliers of red iron beams, but I would imagine suppliers would still have something.https://www.engineeringtoolbox... is a great free resource for information on different types of materials.Hope this helps at least some!

You can get RentRedi for free when you sign up for BP Pro membership.

I can't say whether the others out there are good or bad (and there seem to be a lot of them cropping up) as I haven't had any experience with them. 

You wouldn't want your mortgages to go unpaid for two or three months as people lament or are stressed out over other issues.

I've seen investors struck home run terms with private money because they were able to find good people and build relationships, but there are also people who've had terrible experiences and even been scammed.

Feel free to reach out directly if you need anything else.

Any experiences, the good, the bad, and the ugly would be appreciated. 

If you or anyone else has personal experience with quantifiable evidence of successfully owning a small or medium size business on an absentee/passive basis I would be interested in learning about it.  

In my experience having mutli-family properties have not been a factor in getting a loan for a single family.