You could try different sprockets if you were planning a long haul road trip, maybe add one tooth to the front and drop two teeth in the rear. This would give you four combinations to work with and probably not have to make any changes to the chain:
1. Current front and rear
2. Bigger front, current rear
3. Current front, smaller rear
4. Bigger front, smaller rear
The drag bike is a blast, running bracket class (Street ET) on a budget. Mild 836 flat top overbore, 1-1/2" longer swingarm, and spacers in the forks to reduce rebound effectively shortening the forks by 1-1/2".