Did they close on time and deliver as promised? 

As a former house hacker myself, I'd suggest you try not to get too close (in terms of friendship) with your tenants - the tenant/landlord relationship can make it tricky to become friends.Do you have a price range or down payment amount that you're targeting?

That's a big advantage over getting the whole amount at the closing.

He did respond to someone whose account was closed and their original post removed so it does sort of look like he is talking to himself.

Whether you’re a new investor or a seasoned pro, the competition is fierce, and the best opportunities often seem just out of reach.That’s why BiggerPockets is teaming up with DealMachine to bring you the Off-Market Deal Finding 5-Day Challenge—a completely FREE event designed to help you find your first (or next) off-market deal FAST.Here’s What You’ll Get:📅 3 Live Sessions led by Matt Kamp, VP at DealMachine and a real estate investing expert who’s helped customers close over 15,000 deals.🎁 $2,000 in Prizes just for joining the challenge!

Weeks before closing Blue Metrix Group reached out and said they were struggling with the financing for the second park and they asked would we owner finance. 

I've read BiggerPockets' Real Estate Investing book and am particularly interested in the house hacking strategy, as I'd like to move out of my current living situation.Our main dilemma is choosing between a single-family home (renting out one room to a close friend) or a multifamily property like a duplex or triplex.

What they will offer you is an appliance package, or closing cost help, or a low fixed rate loan. 

I can buy a 2-4 unit with 20% down vs conventional can only buy a 2-4 INVESTMENT property with 25% down 4. there are options where DSCR loans dont repot to personal credit, helps in not having to show a bunch of paperwork or not one person in a partnership has to carry the debt5. way less paperwork to close on this loan type vs a conventional loan. we care about the income of the property you're buying and it's ability to service the debt of the property whether we use long term rents income, lease income, or air dna/bnb income.6. easily buy in partnerships, add people to your operating agreement, its as easy as that so bring partners into a deal. helps with scaling and raising capital or getting partners involved7. gift funds allowed to close on these as well, and like I said earlier, there's only a 10day seasoning period of funds with some lenders so that means you can literally have a private money lender deposit money into your account 11 days before closing, and you can use those funds to close!

Step 2- close and start rehab-- would need to pay holding cost during rehab?