So far I got only individuals with a rent limit of 1200-1600is it  common to let  2 - 3 individuals who don't know each other rent the house?

This means both parties have certainty upfront.Market Dynamics: Just like with other financial instruments, market changes may benefit one party over the other over time.

HELOCs are not available because they are residential loans guaranteed by individuals and what you seek is a type of commercial loan or credit line which are available to seasoned companies with proven financial track record.

Individuals are purchasing these properties, rehabbing them, and raising rents.

@Zach Howard some copy & paste advice below:)-------------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

The financial and social extent of this disaster (initially estimated at $50B) is underestimated by at least 5-10X.

Prioritize your financial stability.

I desire to connect with individuals who have had experience investing in real estate while serving in the military on active duty.

Please let me know the financial implications. 

If you need financial help, ask under the "Finance, Tax, and Legal" forum.