It doesn't need to be doomsday or stable. A series of small corrections is more than likely, since we barely had any for a whole year. It was due and if things did not fall apart yet ,I dont believe they will anytime soon.
How will you get stripe to accept processing your sales? You need the website fully setup and possibly prior sales?
I am not sure how that works, I got denied by Stripe a few years ago. I might try now that I got solid foundations.
Uruguay WAS really good for tax evasion. I live across the pond in Argentina and plenty of us moved money there. Is not so appealing nowadays. I can't recall the specifics but it seems that sail has shipped now.
Trade station works with all IKBR' global markets, also crypto and accept people worldwide unless you're in a conflict zone or somewhere rare. Actually they both do, Tradestation and IKBR (US and Global versions).