Large Realistic Landscape Paintings

I'm seeking an experienced artist to create four large (roughly 24x24 inches) realistic oil paintings based on my photographs. The landscapes include:
- One beach scene
- One mountain view with cowboy on horse and cows
- One cabin with mountains in background
- One river setting with a US flag

Ideal skills and experience:
- Expertise in oil painting
- Strong portfolio in realistic landscapes
- Ability to work from photographs
- Ideally want an artist from Idaho or Wyoming (or Intermountain West)

Please provide samples of previous work and an estimated timeline.