The battery grip is incredibly useful *if you like the feel* - the battery life on one battery is good enough for most people, especially with the $15 3rd party batteries being great quality meaning you can have a few extra to swap, but for me, the camera doesn't feel right without the grip. It really makes vertical shooting and all-around handling better. Anyway, as for lenses, I'd skip the 17-40mm since it's too much of a compromise.
Yes, it has a red ring, but as you see by the cost you're paying more for that than the usual features of the L series. It's only f4 constant, which is "ok", but inside shooting suffers and that's too much money to spend for mediocre all-around ability. You'd be better off with the 24-135mm IS lens.
I don't like zooms, though, so I recommend the 50mm f1.8 (the $220 difference isn't worth the f1.4) and a Sigma 20mm f1.8, and then perhaps something in the 100-200mm range of your choice. It really depends on what you like shooting: if you're a portrait ... more.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.