The EUR/USD is ideal for beginning traders because it is less volatile than many others and therefore fewer losses.

My wife (Japanese) and I just moved back from Tokyo a few weeks ago.  

Most mortgage buyers have a strategy which is more akin to buy and hold as opposed to moving in and out of investment positions like a trader. 

You could put that toward a Japanese cash flowing apartment.

Basically trying to figure out if my rental income can be treated as a trader/business for QBI / 199a  but not be subject to Self employment tax like my construction business income.Thanks Dustin

Just not my cup of tea being a day trader.

"Established nieghborhood close to parks and amenities, trader joes, lowes, blah bblah, 6 miles to downtown,, etc etc, large backyard for cook outs and bbq.

Most have investment trader licenses as well.

., about Akiyas in Japan.One of the requirements for a Japanese's Business VISA is 5M yen, or about $30k proof of capital for the business.

Not much you can do about the Japanese yen being devalued or some such thing5) short answer is no, though there are some exceptions which are convoluted and not worth going into at low volume.