For personal trading and personal use of financial instruments there is no need what so ever for any license, not in the Seychelles nor in most other countries I know of. I do this with a company in Norway, never ever had a problem to trading anything, bitcoin, ETF's, stocks, forex, metal etc.
You can do the same in the seychelles, setup a cheap Wyoming LLC appoint it director in the seychelles company and good is, privacy protected and no one will ever ask you for anything.
Transferwise and Paysera so Kraken may be the options for banking. Check if they accept Seychelles otherwise keep︀ it in the US with a Wyoming, Delaware or New Mexico company which is supported︁ by the EMI's mentioned.