Just an opinion here
You've got 2 different race modes. Belleville is big, wide & fast. It eats engines so you're going to get the USAC teams chasing points and the smaller team chasing a payday. If memory serves me it pays $400.00 to take any green flag and $1,000.00 to start
The other group of racers will race at Pevely it will be less stressful on engines and chassis
According to Mapquest it is 473 miles between Pevely and Belleville. I don't think there will be 1 car not go to one or the other race
I've never been to Belleville KS, I have been to Pevely. The midgets will put on a great race at Pevely
As you, Belleville is on my bucket list and I had plans to get there this year. There is a 50% chance of rain so I moved it to next years calendar
I will be at Pevely though