Since I'm a new immigrant with no credit score, a DSCR with 30-35% down payment is my only option, so the 50K need to include that down payment alongside all other costs (closing, rehab, etc). 

There is still a risk: You do not have the right outprice and lose money, your deal goes south due to unfound things when you bought it, then the rehab phase brings them up, and you spend more, and the market changes, which is something that can happen on a moment's notice.

If you end up in Cleveland you'll want to read The Ultimate Guide to Grading Cleveland Neighborhoods to give yourself an in depth idea of the market.

Often, owners beat up PMCs for a low price, but fail to understand the PMC will often cut corners to make sure they are still profitable. 

I'd recommend having enough to close on the deal + rehab + $5k in reserve as a minimum. 

As I read your post, the reoccurring theme that came up was a screening problem. 

I'm noticing there are some really nice cash flow markets in texas, some of which are really close to the Mexican border, though.

I will say we are way out of town with just a small market close so it makes sense to have a fully loaded house.We only provide 2 small soaps and 2 shampoo bottles in each bathroom.

Build up job skills, build up savings, and increase your W2 income.

Being a normal person and giving someone a heads up has not bit me, yet.In addition to what the law requires, I always shoot the tenant a heads up either via text, call, or email.If they are mostly responding to email, then shoot them an email.Emojis and gifs work wonders in today's day in age.