Longs time frame
eruggles,
Thought Id chime in about Longs Peak. Hiking Longs via the standard route (Keyhole route) is dependent primarally on snowpack and or weather conditions. There are some sections ie. narrows,homestrectch, that can stay snow covered or ice covered well into July. To some this can pose a problem, to others with crampon and axe experience its not a deciding factor. The route is deemed technical by the forest service until these ice conditions are gone, this varys year by year, for instance last year it was the later part of July before the route became "non technical" according to the forest service. I would venture to say by August the keyhole route is dry,safe and see's the majority of its traffic, which by the way, can be alot, it is not uncommen to see upwards of 50 or more people attempting the route on any given day.
kevin is right on, I would leave for the climb at 3.00am at the latest, unless you camp at the boulder field, which personally I wouldnt do, the reason I wouldnt, I think its alot of work to pack in for the amount of time you would save, I prefer to travel light and fast, but thats only me, camping at the boulder field may be an attractive choice for many.
Your 2 biggest concerns are the weather and the altitude. Afternoon thunderstorms roll in any time after noon and you should definetly be descending by noon, being high on the route during a storm is potentially fatal imo, lightning can be severe and the route can ice up or become a waterfall in a bad thunderstorm, litrally becoming semi technical.
Altitude is another issue, not just getting sick, but not being aclimized can make you slow and make the hike less then fun. There are many places to aclimate in the area and sleeping high (around 9k) is a great way to aclimate. You can take trail ridge road up into Rocky mtn national park and drive to 12k, at that point you can hike around the tundra and trails easily, its both beautifull and provides great aclimization fr your hike.
Any other info, Id be glad to help, Longs is a beautifull peak, just dont underestimate conditions or the peak. OH one more thing the Keyhole route is very well blazed with bullseyes on a good day youd be hard pressed to lose the trail.