I've been skiing Summit County every weekend since 12/1. Some general observations:
Keystone and A-Basin are very lean compared to an average year; in fact A-Basin seems to have about 1/2 the normal base. (Rumor has it that Vail/BC's $250k cloud seeding program above Eagle is benefitting those two resorts at the expense of the "downstream" Summit County resorts.
Copper and Breckenridge are a lot better. Last Saturday at Copper saw about 5" of new fairly heavy powder which went a long way to covering some of the remaining rocks. There are still some rocks on the steeper or more exposed runs but, on balance, not too bad. It snowed about 4" last night, but its been awhile since any big dumps. We've been able to count on one 4-6" storm every week. Another small one is expected this Sunday/Monday. If you hit it right after a storm, skiing is quite good. If its day 2+ after a storm, count on needing fairly sharp edges, at least for Colorado.
Personally, I'm worried my Chicago Ridge (SW of Summit County) backcountry cat trip won't have much powder to ski.
Bottom line, though: I wouldn't postpone or cancel your trip.