Bitcoin and other cryptocurrency cannot be used as a down payment in a traditional mortgage (Conv, FHA, VA, USDA). 

Considering a mix of long and short term rentals, with the STR’s being non-traditional structures targeting glamping clientele.

How are people buying multiple non owner occupied properties on fixed rate traditional 30y mortgages? 

The vast majority of "regular" or traditional (Conv/Govt) mortgages are originated by specialty lenders and brokers and are sold in the secondary market to provide yield on bank balance sheets (think Chase or BoA) or to be securitized into MBS.

The whole scheme was buy a foreclosure, "sell" it back to someone that can't qualify for traditional financing with seller financing at a higher rate, once note is "performing" you can sell the note and make a lot of money. 

We buy, we can sell off market, or we can sell it traditionally.

Our plan was to do the traditional house-hack, but things haven’t gone as planned.During some self-testing followed by professional testing, we discovered lead in several high-traffic areas of the home.

@Rafael Ro Traditionally, investors have targeted Class B properties. 

Are you sticking to traditional banks, exploring private lenders, partnerships, or maybe something creative like seller financing?

I run sum numbers for you please see comments below before refinancing and post refinancing .If I were in your position, I would approach it as follows:Initial Investment Assumptions: Market Value: $360,000 Purchase Price: $360,000 Equity: $0,000Financial Breakdown: Hard Money Loan (LTV 100%): $360,000 Interest Rate: 10% (30-Year Amortization) Monthly Payment: $1,995Upfront Costs: Origination fee (1%): $3,600 Closing Costs (3%): $10,800 Renovation Costs: $10,000 2 Month of Carrying Costs During Renovation: $5,390Total Upfront Required: $29,790Total Capital InvestmentPurchased price $360,000 Upfront Costs $29,790Total: $389,790To make this investment work, you need to rent the whole property for at least $3,165/month, refinance it let say after one year with 5% interest with a traditional mortgage.Year One Rent: Monthly Rent Income: $3,165 Monthly Rent Losses during renovations (2 Months): -$6,330 (-$527/month distributed over 12 months) Total Rent Income: $31,650 per year => $ 2,638 per monthMonthly Expenses: Hard Money Loan Payment (10% Interest): $1,995 / per month interest only Property Tax (Assuming $3,000/year): $250 per month Property Insurance (Assumption): $100 per month Utilities (Hydro, Gas, Water): $292 per month Assuming 0% Vacancy first year Assuming 0 % Repairs & Maintenance first year because unit has been recently renovated Total Monthly Expenses: $2,637Monthly Net Cash Flow: $1Post-Renovation Refinancing Strategy:So far, we’ve purchased the property, completed renovations, and rented it out.Next, you can approach the bank for a refinance to consolidate your initial investment of $29,790 plus your 360k debt into a mortgage.