I'm planning on trying a century (plus/minus) in May or June by which time I hope to have 3000 miles under my belt. Current gearing is 50/39/30 and a 10-spd 12-27 cassette on my Giant OCR 1 which I think should be ok for tackling terrain profile I've attached. I'm going to take six water bottles which may require a seat-back water bottle carrier and possibly a front handlebar bag. Will need spare spokes, tire, tubes, tools, etc. Reason for the six WB is that a good deal of this ride is back country between San Benito Country and the Central Valley (California) and once you pass Paicinnes I believe there is nothing until you're considerably downslope. I had inquired over in the LDR forum about ways to carry H2O and was advised against a Camelback.
This is a good deal of climbing, about 2-1/2 times what I've done so far, so I'll be doing more climbing over the next 3-4 months and working on hydration and nutrition (cut down on donuts mainly), but this looks like a real challenge and this back country is absolutely beautiful in a CA sort of way.
Feedback/critique would be greatly appreciated. Is this too ambitious with so few miles under my belt? BTW, I've joined a local (40 miles away) cycle touring club and will try to find someone to ride this with me. My Wife has agreed to drive to the other end for a good meal of course!