I-70 that time of year is a crap shoot. You could have dry roads or you could have snow packed and icy roads, or any combination of the above, all on the same day. I would look for a different route, such as I-40 to I-25. Pulling an rv up and down slick passes is not a good time. It isn't impossible by any means, it's just not much fun and I would think about the risk to the family riding with you.
Becky, Bob and Taylie & Bode
2009 Silverado 2500HD Duramax/Allison
2014 Heartland Sundance XLT 245RL