I am inspired by my father in law who was a fanatic climber until last year when he had a heart attack and he is not able to enjoy the sport anymore.

I had collected some very nice looking tree bark a few weeks ago end they have a very nice structure so now I am going to make a Latex mold and cast it in dental plaster so that I can paint it like a rock feature.
The problem I am facing with is that I can't decide which piece I am going to use, so I need your advise.
The plan is to make it a diorama that can be hanged on a wall

Here are 3 possible lay-outs to use and I have put the leg parts of the figure I am going to use in the spot I wanted to place the climber.
A)

B)

or C)

I fancy option B myself because the ''rock'' is so slick and narrow it gives the feeling of danger and anticipation (my sentiment).
The figure would be a mix of Airfix and Tamiya figures (Dessert rats - 25 pounder crew) and a Hornet head.
What do ye think? Am I going nuts??