I would shoot for as high of leverage as you are comfortable.

you won't be getting a bargain price, but you will be getting a property with built in high leverage.  

The market does not produce cash flow, it does not have extremely cheap leverage, and it does not have enormous tax advantages.

Hard money: “The Pros and Cons”Pro-All CASH Transaction-Quick Closing Times (<14days)-All “Rehab Cost” are covered in Loan-Lower Leverage for Buyer and more Liquidity-Flexibility to buy Distressed and Value-Add Properties-Loan based on Property and underwritten so Borrower is Profitable-Does not show up on Credit Report-No "DTI" (Debit to Income Ratio)CON-Higher interest rate than Bank-Shorter Repayment Schedule (<12 months)-More conservative evaluation of the Property’s Value-Not doing your research and working with a “Bait and Switch” Lender (check out our post on this)Real Estate is one of the most dependable and powerful ways to grow your wealth.

A great wholesaler is leveraging a rare and valuable skill to efficiently wholesale properties to serious buyers. 

The key here is to leverage opm (other people's money).

Well, as you've pointed out, the problem with residential property is that you don't have access to leverage.

📉🏘IMO, Those who buy right, at reduced rates, aren’t over leveraged, & own higher cash flowing properties will be fine, but may have to lower rents or deal with more turnover, if it gets bad.

I know you can leverage some 401k's for RE.

Or you can choose to purchase one or more with little leverage and one or more with maximum leverage.You could for instance purchase one property free and clear for $80K, use $20K as a down payment on a $100K rental, and use the last $50K as a down payment on a small multi.