With seller financing, the seller acts as the lender, letting you avoid traditional bank financing.

Although I wouldn't suggest this and you don't need to do this, most lenders have a due on sale clause and this could be triggered (altough low probability) when transferring title out of a borrowers name. 

.: Anyone with experience (and/or referrals to lenders) with non-recourse loans?

You do have to keep an eye on your write offs to ensure you are showing a good NOI and not using too many write offs to show enough income to use for bank/lender underwriting on a mortgage/loan.

The lender is getting a 2nd large asset (your crypto) to secure only an additional 20-25% of loan value.

I have a good 10-15% down lender on rentals. 4.

Are there team members (RE agents, wholesalers, lenders, PMs, contractors, etc) you'd recommend?

The lender had their own unique requirements. 

Opt for loan terms and interest rates that you can comfortably manage.Build reserves: Set aside cash reserves to cover unexpected expenses, like vacancies or repairs.Consult with professionals: Seek advice from real estate agents, lenders, attorneys, and tax professionals to ensure you're making informed decisions.Remember, there's no one-size-fits-all answer.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?