Thank you all for the excellent advice and kind comments. Many of you recommend short distance before making the trip we have planned. Well, that is really good advice and we would be doing this however we have a commitment to make the trip either with or without the RV, so we will roll the dice on this and give it a try. We will expect problems, and will mostly make this first leg about getting there rather than camping. We may even use hotels until we get to Denver then start venturing more.
We will need to take a close look at the tires. Kind of figured they would be ok, but as many pointed out the limited use could be an issue. Will also request more details of the local use by previous owner so we can better understand if this is a significant worry.
Thanks again for all the great inputs!! Keep them coming! We will give updates as we make progress on our new adventure.