Investing 125k the best way possible with pre approval leverage

What would be the best way to invest 125k with pre approval lending leverage ? 

What area should i look in ?

How do i find a investor focused broker/realtor?

should i invest in duplexes, triplexes ,quadplexes ?

Or should i invest in apartment buildings?

Or is there another perspective im not seeing or considering that i can utilize to my advantage?

let me know..