I left England in 1979 and have been living and working in different places around the world ever since.
IMHO, your basic idea is right. Combine work you want to do with traveling and experiencing all the world has to offer. Those suggesting you simply skip working for a few years have no idea how difficult it can be to get back into the swim later.
Issues such as visas, living costs, easy access to good Internet connections and an environment conducive to working effectively vary tremendously from place to place. [If you have ideas about where you might go, and let me know, I might be able to provide more specific advice.]
Here are some pointers that you will probably not receive from others, especially those who have not done it. First and foremost, you need a clear plan on work/life balance and you need to be disciplined on adhering to it. I have seen many intelligent and talented people, faced with the temptations that exist in many parts of the world, simply self destruct because they lack structure in their lives. That does not mean you cannot take periods of a month or two to concentrate on traveling and enjoying life in a way that cannot easily be combined with work. It does mean that, any time you do this, you should set yourself a time limit for returning to your more structured lifestyle and stick to that time limit.
If staying more than a couple of weeks anywhere, try to escape from traveler ghettos and immerse yourself in the local culture. For instance, rent a room in an area where few foreigners live and eat in the places frequented by locals. This will take you out of your comfort zone, but will teach you more in a week about the realities of the society you are in than a year in a backpacker guest house.
If you have specific questions, ask away!