That is an impressive list, I would up your inverter to a 400 Watt or better, if you are going to do a lot of long range traveling, go up to 700 Watts or better. This gives you laptops, hairdryers for the wife, power up all sorts or items. I also bought 4 of the northern portable solar panels (20 Watts) which powers my cell phone, GPS, recharge my Steripen Adventure purifier and all my flashlight batteries with it and I use a vector dc to dc converter I found at target for $15. You don't really need the dc to dc converter unless you are charging Li-ion batteries (which I do for the Steripen).
I was looking for a better travel bag and went with the 7016 Long Range Bugout bag by Bug Out gear which gave me 6300 cu. in. of space. I bought a black one from US Calvary and the bag has a lifetime warranty. I'm still in the process of building mine as we speak but the bag is awesome, it even has a place for my 32 on nalgine bottle with stainless steel cup bottom. Anyway these are some more ideas but the solar panels have definably came in handy during our hurricanes when gas was no where to be found and we had a few hand crank flashlights and radios. It allowed us to recharge the batteries on those without having to crank them all day.

Bug Out Bag

Vector Inverter

Portable Solar Panels