Hello and welcome to the RTA forums !

A one way trip of 2 weeks will give you a nice amount of time to do some exploring.The direct route could be driven in 5 to 6 days. You seem to have a good handle on the things you want to see, so I would keep researching to see what appeals to your interests along the way. You will find lots of info searching the forums and the Map centre found in the green tool bar above under 'Maps' will allow you to plot routes with 'Waypoints' and find attractions, it is just the job !

To help with your planning, you should not try and cover more than 500-600 miles in any one day. That would be 10-11 hours on the road with only basic stops for food and gas etc, no sight seeing.

You would have to keep an eye on the weather as you travel as winter can come early to places such as Yellowstone and much has closed down by mid October. However, it can be a wonderful time to visit if the weather co-operates !

Keep asking questions 'as' and 'when' during your planning, enjoy !