Scratchin'

The story that I'm writing has a Faust twist. My main character runs a drive-thru that serves anything desired. Here are the ways he obtains his customers' requests:
A horn of plenty, because I have always liked that image and I also have a weird thing about it (I was a dreamy kid).
An orchard, I always wanted an orchard and my mom's grandma had one. A wolf chased my mom and her sister up a fruit tree in that orchard. It was a terrifying tale. But I can't tell it--she has to.
The last way my character achieves in his business is by time travel.
He obtains the horn of plenty and the quantum power from Cecil the Devil whom only asks for one request. Not for my character's soul, but for something. That's all he knows of it. It could come out of nowhere, it could last forever.
A bargain for the power to satisfy customers.
The orchard provides my character's only means of self sufficiency.
Dr. Zorba a man of intimidating intellect finds my character and uses him to bring desired artifacts of our great mysteries. Tactfully pushing my character further and further towards the edges of time. He wants to know something. Is that him following my character through time? The doctor's constant thirst proves too much for my character's body which changes into a static magnetic opposite. Matter is flipped and he can't change it back. He floats through puzzles of familiar objects and finally finds a friend or a person just as crazed for the answers as Dr. Zorba.
Margot Brungardt is a bright, nervous daydreamer willing to sacrifice her life to reach the pinnacle of knowledge. She is intrigued by my character's plight. What kind of knowledge is the best knowledge? Everything or yourself?