In three weeks i'm taking a two-week trip to the U.S. Atlantic Coast. We'll be visiting both Acadia and Shenandoah National Parks, as well as Boston, NYC, D.C., Philly. My kit is a K10D, DA 12-24, DA 35, DA 70. When I come back I can let you know how that kit works on a trip.
Looking at your questions/kit, I'd suggest maybe trade the DA 35 Macro for both the Cosina and the FA 43. While the 35 is more difficult to use for bug shots as a macro than the 100mm Cosina, I think you have to make certain sacrifices when you travel. You'll lose a stop of speed from the 43, lose the easier working macro range from the Cosina, but have excellent IQ and be dang close to the same usefullness of both of those lenses in one small package.
On the telezoom, I'm looking at the Tamron 70-300, or the DA 55-300, but only when I expect to shoot wildlife. I'm not interested in taking either on this trip as the wildlife opportunities will be few, and I don't want the extra weight. In fact, I ordered the Joby Gorillapod SLR-Zoom so I don't have to take my regular tripod.
I think, ultimately, you either take a heavy kit so you're prepared for EVERYTHING, or you resign yourself to the idea that you can't get (or don't need) every possible photo opportunity that comes up and take a compromised, light, versatile kit.
Todd