I typically ride about 10 mi in the late evening (I'm in TX) so I take 2 bottles of water and no food. I'm only out for a little less than an hour and it's been fine. I suspect Saturday's ride will take more like 2 hours depending on speed. What food should I bring? Will 2 bottles be enough? I don't have a camelbak yet, but my hubby has one and 2 additional bottles so I could always take one of his if I need to.

Oh, I should add that I normally ride at a cadence around 85 and avg about 18mph with the wind and about 16 against the wind. Do you think that is average for a new rider or should I expect to slow down?