First things first; thanks all for the replies and loads of advice and recommendations! It is greatly appreciated and especially nice to see everyone concerned for my (and my gear's) well-being.
Now to address a few of the comments...
I feel it is important to stress that the purpose of this trip is specifically photography. I realize now that I didn't clearly indicate that in the OP. True, I am not being paid directly to make images on this trip, but my intent is to build a portfolio worthy of being paid in the future. Regardless of current or future compensation, I would not be taking this trip if it were not for the photographic opportunities. As such, I'm disinclined to go with a one lens approach. I "get" the whole Cartier-Bresson thing, and the "what's in your hand" mentality, but the fact of the matter is that I have the ability to choose to have more at my disposal. The "right" tool(s) for the job(s), as it were.
Leaving the "good" gear at home seems to go against logic, to me at least. Why buy the best lenses, a 5D3, etc but leave it in a safe when there is some risk? It seems to me the risk of exceptional photos often goes hand in hand with the risk of none(i.e. losing your gear).
And yea, I know I'm no NatGeo 'tog, but the idea of just "buying a coffee table book with better pictures" than mine is hard to swallow. Isn't this why we're here? Aren't we out there to learn and get shots that are worthy of publication or admiration. If not, this exercise seems a bit pointless, no?
To that end, I'd think a single 5D3, 24-70, 70-200, and 17 TS-E, as well a tripod and a few filters, is a pretty minimum kit. I'm young and fit and just got back from carrying much more than that (to include a 500 II) on my back for nearly two weeks in Japan. I won't be getting tired walking stairs or climbing hills.
The theft concern is real and valid. I do have insurance, to include rental coverage. I'll also look into the cable-strap posted. That said, I've also backpacked for months on end through El Salvador, Guatemala, Mexico, Nicaragua and more with gear without a problem. Care, some common sense, and a little luck go a long way, I've found.
Sorry that all came out as a rant. It wasn't really my intent. Just some responses that kind of made me do a double take.
As for gear, I think I will take the advice to go for the 17 in lieu of the 24 TS. I actually HAVE a 16-35 but really wanted the higher IQ and lines. Thinking of selling the 16-35. I'll be carrying my gear in a ThinkTank Retrospective, so at least thats fairly inconspicuous. Torn on the macro. I see one person gave it a thumbs up while most others are saying I've got too much gear.