Debt free or buy SFR?

[Colt Price]

Hi BP, I've got a personal question. My folks are giving us(my family) their big house in exchange for us building them a small living quarters. It'll cost $100k+/- to build. We have that saved in cash. Do we pay for it and be "debt free" or take out loan and buy rental properties to cover our payment with that money? I'm a rookie investor with 1 local SFR now. As you know, interest rates are crazy. I've looked at some turnkey rental companies to buy from. I'm just trying to figure out what's best wealth building for my family. Thanks in advance!