Less is better, lighter is best. I now travel with only a single body, a 35mm and a 75mm and rarely miss a shot.Great advice...+1
IF you "have" to buy something for travel, get a SL1, the 24mm pancake and take the 55-250 zoom - surprising image quality, next to nothing weight wise and the whole package is less that your 200L price wise.
After a couple of decades of lugging an insane weight of gear around the planet, I have reduced trip-by-trip down to a de-gripped 5D (Classic, II & III) and 24-105 f/4is. Then the last trip was with an SL1 and the brilliant EF-S 17-55mm f/2.8is. For travel...go as light as you possibly can. Next trip will see a change of direction..I'll take the MFT Panasonic GH4 with 12-35 f/2.8 and 35-70 f/2.8. 4k video and extremely respectable stills in an insanely small package.