The end of Aug i am planning on spending 5 days somewhere in the Colorado Rockies. This will be my first time backpacking in CO. Needing some recommendations on loops trail. I have been looking at Lost creek wilderness ( goose creek loop)
. Here is what I am dealing with.

Im taking a beginner backpacker with me who has gear but 0 backpacking experience so 10 - 14 mile days is out of the question. 6 - 8 mile days would be best.

I live at sea level. I start getting sick about 10,000 feet.

2 dogs will be going with us as well.

would preferably like to keep my altitude somewhere around 8000 feet. No sure if I can do this or not.

Plan to spend 5 full days int he back country