Just drove through the mountains from Calgary to Port Coquitlam, the Rockies + Rogers Pass etc. Left Kimberley this morning and through Golden and home. It was as hot as 38 degrees today in Kamloops (100F) , air cond. on as much as we needed and 125 K per hour (77mph+) up the hills and never saw the temp go past half way. My wife is a lightweight but we had enough luggage for a couple month trip - I will post a picture of what we fit in the trunk after Jean posts it on the west coast site! You should be okay. Ron