Best way to acquire 2nd property?

[Kerry Pangan]

I just purchased my 1st duplex in January. Renovated and tenants area now paying 100% off the mortgage. 

What is the best way to acquire a 2nd rental property? I've already used my FHA so I'm thinking conventional 20% down?

Which route do I go to fund it? I’m starting to work more hours at my job to save 40k-50k. It’s not going to be easy but if there’s other routes to achieve capital too that’s easier I’m willing to hear it.