I know the seacoast of NH has been mentioned here but I wanted to point out a few options that could be considered.Hampton, a popular coastal town, has strong demand for multifamily units near the beach and a robust short-term rental market, especially in summer.

My budget will be around $200k but I’m meeting with a lender on Tuesday to go over all of my options.

We’re looking for Excel models to compare these options and calculate potential net worth in both scenarios.

Aim for a credit score of 680+ for better refinance options.

I wasn't aware it was an option.

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). 

As you are living in the US and might this virtual LLC office work, it could be an interesting option. 

Narrowing down the options will probably come down to comps and city/neighborhood specifics; things like permits.Any good suggestions for finding out how long permits are taking in certain areas?

(This option would would not carry any debt, all debt would be paid in cash)Or keep our current house, rent it out, and cash flow NET monthly about $1,500?

Here is a link that provides fantastic information on the turnkey investing option from BP.