I am about to go on a trip around the world too
You should bring more than one type of malaria pills. Most types of malaria in Africa, South America, and Asia is Chloroquine-resistant (Malarex or Ercoquin), and in certain areas of SE Asia Mefloquine-resistant (Lariam).
Furthermore, should you be diagnosed with malaria, the way to treat it is by taking a large dose of another product than the one you use as prophylaxis.
Ex: You buy some Lariam and Malarone and take one Lariam-pill each week, like you're supposed to, but get malaria anyway. Then you treat it with Malarone, taking 4 pills a day for 3 days, and you should be fine.
I will be bringing 12 months worth of Lariam for prophylaxis and 4 packs of 12 Malarone pills for treatment and prophylaxis when travelling through Vietnam and Thailand.
You can read more about malaria on this excellent website Chapter 2 - Malaria - 2010 Yellow Book | CDC Travelers' Health
My doctor says, rabies vaccine is pointless, because if you get bitten, you will need medical attention anyway.
I also chose not to choose Japanese Encephalitis, but if you expect to spend more than a few weeks in rural areas of SE Asia, you should consider it. It is a very expensive one.. 1000DKK ~ 200USD for the shot..
If you are getting the Hep A/B vaccine (you should), they give you two shots, which will last a year. I got it prior to deploying to Afghanistan, and when I got home 7 months later, they gave me a third shot, and said it would then last 5 years..