I will be doing the Peace Corps later this summer for 2 years in West Africa. I currently have an early 2011 15" MBP. Is there any sort of extra care I should be doing? I figure a better sleeve to resist moisture might be a good idea. I'm also considering a keyboard cover to keep dust out. I thought about selling my MBP, but I like it a lot and figure it's at least as durable as any cheap laptop I'd replace it with. No sense in setting it aside because in 2 years when I come back, it'll be much more outdated.