Depending on the specific market, multifamily deals that make sense are extremely hard to come by.

Hello 👋🏾 - 1st time extremely excited House Hacker!

former banker here10% is, in my experience, a low barrier, however it's extremely common to ask for a guarantee from everyone who owns more than 20% of any loan. way around this - find a non-recourse loan 

That situation would be extremely risky for a lender. 

To me it looks like the Three Stooges did it.One trade opens a hole in the wall/foundation to make some repairs, they don't do hole repairs and leave it.Homeowner decides to just leave it, or stack loose rubble bricks back in the hole--thus saving cost of a proper repair job.This is an extreme brick problem: https://www.clickondetroit.com/news/defenders/2020/06/29/detroit-familys-home-collapses-as-landlord-refuses-to-answer-calls/

You already have shown you're extreme penny-pinchers just by the fact you're a DIY.

These are loose figures and I was told due to the market it could be even higher but I don't like to plan for higher, I'd rather be surprised than disappointed.

I think the difficult part with your advice is that New England multi family market is extremely competitive so going after something worth 1M might be risky because people are just through junk out with a price tag and the CF doesn’t mAtch up all the time.

This will require the seller to be extremely motivated, and to place A LOT of trust in you.

Purchase 1-2 motorhomes and rent them out through outdoorsy type hosted sites (yes I am aware that this will never appreciate  and will depreciate quickly) these do extremely well where we live.Thank you for reading and responding, my wife and I appreciate your time!