Well, if it runs okay, the carbs can wait until you come back. 200 miles is hardly a long ride. Just check the tire pressure before you go. And since you leave in the evening, you better check your lights too. I don't think you need to look for gas after 100 miles either. With the ridiculously low highway speeds, you get excellent gas mileage and have no problem to reach a gas station after getting on reserve. No high rpms either in fifth at those speeds. Besides, following the car, you won't be stranded.