BRRR strategy. It allows you to create equity and multiply that seed money.
Quick/tired math as an example. You leverage that $100k to buy a distressed house that after repairs is worth $133k. Let's say it was $75k to buy, $20k to rehab and had $5k in holding costs. So you are in $100k with a nice rental house that you then refi to get you cash back (note that 100/133 = 75%, that's for a reason :)
Because you want to reuse that money, let's assume you can do this 6 times in a year (1 new house every 2 months). That may be aggressive but go with me.
In one year you will have $200k in net worth added. Aka, you are 1/5 done in one year... :)
You will also have cash flow from those properties so let's assume you CF at $100/door per month. In year 1 you will have a few extra thousand to build that cash reserve (again, I'm tired so no full math on this part.... Ha)
OK, so buying, rehabbing, refining and renting in 2 months might be tough... Let's say you only do 3 a year... That's still $100k in equity...you will have $1m in net worth in 10 years, not 15. Not bad right?
Add in the cash flow and the fact that the net worth number does Not include the $100k.... Well, not bad
Good luck