Need a graphic design poster for a sports room

Industry: Sports and Fitness
Design details: I own a sports room (home gym) and I need a creating, pro-active designer / photographer to bring my sports room to life with triathlon imagery.

The room is around 36m^2 with two windows (1.2m^2 each window) and a door (details and photos given after accepting proposal). I need:

* design fo a giant wall poster themed about triathlon (Swim-Bike-Run);
- photos used should be yours or free for general use;
* recommendations on the best way to print something like this professionally and shipped to Germany;
* if you are in the know, bouncing ideas about what else to do with the room with regards to interior design;
- Example of a running cave: http://www.runnersworld.com/fun/take-a-tour-of-the-ultimate-runners-man-cave

Here's a
Ideas for the visual style: Open to ideas
Urls to draw inspiration from: http://www.runnersworld.com/fun/take-a-tour-of-the-ultimate-runners-man-cave
Extra notes: