How much time will you have available for your second trip with the dogs ? As Buck mentioned, there are too many options and combinations to count so a good place to start might be to look over the maps and see what places appeal to you and see how you could include them in the time you have. Personally, Colorado and Utah would be calling to me with the great and diverse scenery and amazing scenic drives on offer. Around this site you will find some great sources of info from searching the forums to checking out the maps and other planning links in the tool bars at the top and bottom of each page. Once you have some ideas put together we can help with the finer details and answer any questions you may have.