Well your in good dorky company- I use my camelback in anything longer than a sprint! I have a longish pump because I gave up the co2 pump, and it doesn't fit on my bike anywhere, so I carry it in my camelbak. So not only am I plump as all get out, I have a camelback on with a pump sticking out. But you know what? It works for me!!
I've tried to figure out where I could mount my pump, but my bike is so small (an xs) that the triangle doesnt even allow for me to put a water bottle cage in it. Well I COULD put the cage on, but no bottles would fit. Even the squat ones. Anyway, I'm yammering on....
Well HAVE FUN! And kick some serious arse out there! I know you will!
Ciao bella!
Denise