+2 That is way too much weight. Unless you are carrying something very specific - one guy is talking about rock climbing gear right now, or a musical instrument, etc. - you can easily get the load weight down to the 30-40 range including all camping gear. Maybe your camping gear is from a long time ago? A tent should weigh less than 4 pounds, a stove less than a pound, pots/pans should be titanium or aluminum and weigh a fraction of a pound, clothing should be synthetic (no jeans! no sweatshirt!) or down, be limited to one or two sets of bike clothes and one set of off bike clothes - shoot, for FL/AZ/NM you barely need any warm clothing. A sleeping bag weighs 1-4 pounds, a sleeping mat less than a pound.

Go over to www.crazyguyonabike.com and look at some packing lists. Take some of the money you were going to spend on an expensive bike and spend it on high quality light weight camping gear. shop at REI (www.rei.com) not walmart, kmart, big five or any camping shop for hunters or car campers. look for "backpacking" gear. For racks and panniers, try www.thetouringstore.com.

For trips in the US and other 1st world countries, the Rohloff hub & dynamo are overkill. Your comment about sand roads leads me to think you are not going to be crossing Africa, maybe just going to France or Australia or something like that, in the future.

Tour bikes are like pickup trucks - you want to be able to lean it against a pole, let it get rained on, drop it a few times, throw a load of groceries in it... and not have to worry about a few scratches.

Putting together a fantasy bike with the best and most of everything is fun on paper, but then when you take it for a ride you may find it owns you more than you own it. If you're worried about theft, paint damage, dents etc on tour, and your bike weighs so much you can barely get it over a freeway overpass, you're not going to enjoy the tour as much as you would on a more lightly loaded, less fancy bike. Living in Florida, perhaps you don't realize the huge effect extra weight has on how hard it is to ride - AZ and NM are not flat, and in my experience, the hillier somewhere is the better the touring is - so you want to set yourself up to enjoy the hills, not avoid them.

I would investigate the Surly Long Haul Trucker and Trek 520, as the current standard 700c wheel tour bikes. These are both reasonable quality bikes, highly functional for what you want to do, not expensive. When you pick the one you want, you can work with your bike shop to swap out any parts you want to change -- have them start with a bike with an un-cut steerer tube, add a high-rise stem, swap out to mountain bike gears for easier pedaling, etc. If you do that when you order, it's less hassle and less money than a later retrofit.

So, I hope this didn't sound harsh, I didn't mean to step all over your dreams - I think you can have many great tours in front of you, but you're setting yourself up to be unhappy, and I think it would be a good idea for you to give this stuff some thought.