You have a few options.
If you are able to trade in later this year, you can get the new Cafe Racer model which has increased power and claims a 95mph top speed. We have yet to verify any of that, but it's a nice looking bike and it has some potential. Not exactly a "tourer", but you could get normal handlebars on it, and it looks as if it could fill the role to some extent. Supposed to be available in limited quantities by Fall 2013.
Next, if you are looking to keep what you have, we(Ace) are working on a performance package which is aimed to do what you want, but it's not nearly ready to release yet, so it will be a while to wait.
Third, if you want to get back to a carburetor model, we(Ace) have a Fireball 535 model of the vintage Iron Barrel Bullet which definitely will do more than you described, and the kit has been available for 3 years. Top speed over 100mph, cruises at 80mph, very streetable and reliable, and some owners have reached 50k on these Fireball builds, and still going. You'd have to sell your bike and buy an Iron Barrel model as a basis, and then build it up as a Fireball. It does very well as a touring model engine, with wide torque curve, very smooth, and gets great fuel economy on the highway.
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