Instead of $500 off the first months rent, have you considered lowering the rent by $40 dollars per month?

For more expensive properties you'll be wanting to pay a lower interest rate and doing short/mid term rentals.

If you can come up with an extra 1.5% and finance with a conventional loan you have none of those downsides, a lower monthly payment and PMI only until you hit 20% equity

Main goal of All In One heloc or 1st Lien Position Heloc:  Lower your daily average balance.Main Drawback: Rates are substantially higher than 60% of current 1st mortgage balances.If you are mostly living paycheck to paycheck and your money leaves your account as soon as it comes in to pay bills, this is not for you. 

when I used a capital gains calculator online, if I put zero money down and put the 2 loans, the cap gains is a lot lower than if I just recorded 1 loan and entered the money from the downpayment loan under cash.

As far as rates I see them declining slower than expected but lowering nonetheless. 

I do not have to do anything right now, I just need to learn, wait for the right opportunities, or create them - for example by trying to use subject to and take over someone else's payments who locked in a lower interest rate from a few years ago. 

I am buying a property for 144k that appraised for 247. the property was lowered to this number after sitting for a year. needs 25k in repairs, and will rent for 1350-1450.

Research landlord-friendly states with lower property prices and strong rental demand, like Texas or the Midwest.

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+ (roughly 5% probability of default), zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680 (around 10% probability of default), some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.