That's pretty low for a 3-BR - I'm seeing the FMR for a 3BR in that zip code is $1,850.But at $1,300 for rent, you'll probably find HMLs that may lend you around $120k if you have a good credit score in my opinion, which means you'll need $45k + closing costs.

Ebooks, podcasts like @Bonnie Low suggested and start running numbers on every deal you see until you know how it all works.

Are you looking to submit just a small list, find a skip tracing service that does not have high spend minimums but rather flexible spending option for low or high volume. 

I would assume a greater emphasis on quality of materials and workmanship (and consequently higher rehab cost) for a rental where the investor will have to deal with the longer term implications of any corners that were cut.

@Bonnie Low - it's important to know what services you're paying for.

Maybe with a low (70% or less) LTV or an ARM and stellar credit...also depends on what type of loan you're looking for (nonQM or conventional Fannie/Freddie)

If it discharges 5 foot from the building and there is a low spot running back to the building, then it is going down hill back to the building.

@Kwanza P. 780+ pretty much gets you all the same rate regardless of being in the low to mid 800s. 

Is is low enough that someone would be ok with a wrap??

The biggest pro of using FHA and conventional financing is you can easily use them to house hack for 3-5% down payment which is an extremely low down payment.