The Triumph Speed Triple is a Great bike for about any type of riding on the road. I put 65,000 mile on a 2000 with everything from touring to Nova Scotia to track days. But if your goal is to achieve a record it would not be the bike due to the competition that is already in that class.
The Suzuki 750 will give you something that will be competetive and it sounds like would have a story to go with it. Of course set up would have you staying up late at night both dreaming of what can be done and then doing it.
What worked out for me was an Ebay Triumph 600 that was already turbo charged. I only had a few sleepless nights. Keep learning and before you know it you will be joining all the great people on this forum.
Tod