Right now the only utility at the garage is power so basically I am starting with a frame and a roof. 

I don't immediately see any reason that their basic home value and rent indexes should be considered fundamentally flawed based on that connection.

They bring higher tenant turnover, limited cash flow, and attract traditional tenants who aren’t your ideal long-term buyers.

Partnering with a wholesaler sounds fine, but check the real estate licensing laws in your state before bringing a buyer for a commission.You might consider getting your real estate agent's license and legitimately earn what your skills, drive, and experience truly command. exactly wholesaling or bird dogging is not a life time or long time occupation  RE sales can be lifetime and if your any good at it at about year 10 you should be getting all your sales from referrals and such.

interest rates and prices are basically too high right now."

Podcasts and books are another fantastic way to get some knowledge in and help understanding the basics.

google "all inclusive Deed of Trust" fantastic CA document we used all the way back in the early 80s If I'm not mistaken though a wrap would require the 2nd buyer to also agree to financing terms; which would be the same as me (the 1st buyer). 

I will potentially move into one of the units for some timePurchase Price: $1.98MAssumable Existing Financing: $1.18M @ 3.48% ($5,563/month) Seller Carry: $300k @ 3.5% (5-Year Term)Down Payment: $525k (Buyer to Bring)Buyer pays all closing. 

Find your cash buyers via propstream, batch leads etc.

Now rural counties and can be a little different but like Jonathan says every market basically has their players..