Nice grade,, I used to be in construction and I do not think VDOT will build any roads with over 11% grades these days, you might be surprised on the old county easements though.16% grade. seven on my bosch mid drive your going to have to put out about 200 watts of your own. thats about 20 mph on a road bike.
"OP", take the plunge just do not drain the bank account on the first one, after awhile you will be able to tell what works for you, when you are comfortable, resist temptation and ignore the rest, only upgrading out of necessity. Cheaper bikes are starting to get better components so do the "Turtle thing" and be patient.