You will need at least Q Deluxe, so I would purchase that first. You can upgrade to another version later if you want. The issue you may run into is with foreign currencies. Q can handle those, both only one currency per account. If you have holdings in, say, dollars, euros, and yen you would have to list them in 3 separate quicken accounts.
Follow up question - I have created and added transactions in the Investment portfolio but I have trouble with following...1) stocks outside of US market are not available in the list so I manually add the ticker but I cant find a way to get them updated automatically with the current stock price.