Bobespa is the most difficult one on your list. I had to get a Brailian bank account and sign a ton of embossed paperwork. Then had to pay a 10% tax on the cash sent to fund the account. Maybe it's easier now but I'd not think so. LME is a bit of an oddball too. Talk to Chip Chong about it. Can't remember the clearing firm.
Yeah. That sounds right. Not my favorite place but probably one of the easier to get access to LME at.
Yes. CQG rep told me only 2 brokers give access to Bovespa, one of which is russian...LME is listed by a lot of FCMs but then when you ask them about it, it becomes tricky...