Hahahahahaha. This thread is hilarious!
OP, be honest dude, you're not looking for a "partner." You're a wealthy older man who has a checklist of the type of woman he'd like to sleep with and thinks he can bag as a wealthy business owner if he moves to a poorer country. You're attracted to Latin American women (especially if they're white, ugh, hence your interest in a cono sur country) as opposed to other women because you think you'll have some sort of leverage due to your money/power/heritage, or a combination of all three--the type of leverage you don't have where you live right now. Why try to sugar coat it? You're hardly the first. There are plenty of web sites and agencies that can help you out, and plenty of young women looking for a transactional, old-school relationship with an older man. Just don't be an idiot and act surprised if your financial situation changes and suddenly the woman of your dreams decides she doesn't love you anymore. There are a lot of bitter expats in Latin America who tried to play that game but didn't quite get how it worked, or forgot somewhere along the way. Good luck and godspeed, but you'll get what you want faster if you're completely honest with yourself (and her).