Holy carp! No way I'd take a bent on those hills. I don't know what the grade is, but some parts are hard enough to walk up -- there are places where I'm sure I'd have to stand on my racing bike even if I mounted crazy low gears.
I agree with most of what everyone else said about getting used to it. Once that happens, you'll always want to ride the bent. The other day, it was raining, and not wanting to get my expensive recumbent mucked up, I rode the old mountain bike. One day of that was enough.
Make a BOLD Statement While Cycling!