Upvote:2
Your question is not really travel related; but I will answer the travel related parts:
Do not rely on Internet being available, or being available at a particular speed to get your work done.
Carry a laptop that is portable enough for you to be lugging it across airport terminals, buses, and even being sturdy enough to being banged around a bit in the overhead bin (or you may have to chuck it into the bus cargo hold).
Invest in a good set of batteries (or replace the ones you have now).
In light of the above, from my personal experience - I would recommend a Dell XPS or the IBM Thinkpad range. The macbook pro is also a good option, but they might be out of your budget range and should you need to get parts/repair it; there may not be a service provider that is practical to reach (again, depends on where you are going).