on the poles I think it matters how long you want them to last. I think with the thickness and depth of the poles I could just replace all the cedar some day if it ever rotted out. If you don't plan on being there more than 10 years let's say, wooden poles should be great. My dad used wooden poles on the fence he built probably 15 years ago, and they probably have needed to be replaced for the past 5. They will be replaced soon with metal poles. I used cedar on everything, I could go look at what I paid for the stuff if you think it would help, but probably not being as you are in Colorado.