Sweet!
I am in Longmont, and just came back from Walden through Loveland after a successful RFW hunt in the N. Park. PM me if you want more intel.
The ranch outfitter told me that they get about 3-4,000 elk in the valley late in the season.
It will be a bit cold to camp if that is your plan. Motel in Walden is probably called for.
I think that will be an awesome hunt! I want to hear about it, if you please, after you go.