Hey if you have the money, don't let others discourage in getting something special.
The SRAM Apex series has gotten good reviews. If you get a 50-34t frt crank with a 11-32t rear cassette you will have all the gearing you would probably need. But that being said the best drivetrain for touring is the simplest and most durable, yet still offers a range of gearing. Some folks tour on 8-speed mountain bike drivetrains. The Soma Saga is a more heavy duty frame, great if you intend to be off on your own a lot and carry a lot of stuff. A Soma Double Cross is a more lightweight frame that you can also tour on, but won't carry quite as much gear but is more fun to ride when you are not touring. One thing some tourers like is to use old school technology like bar end shifters or downtube shifters. They are not as precise as the SRAM double tap shifter/brake levers, but have fewer moving parts and are less likely to break in a crash...also more repairable if you crash these. Out on a tour, mechanical breakdowns suck big time. Ask a good bike shop for advice. Even better order the frame through a shop and they can custom fit the bike to you, a benefit that you miss if you buy a bike off the net or buy a complete bike. The right fit and ride position for you is uber-important on a touring bike, because of the sheer number of hours you'll be on it.