Based on those times I don't see a problem. Over here on the last week of August there are three shows. One is 200 miles from mine the other 300. There are one or two Koi-kichi that will visit one show on one day and the other on the next. This has been going on for almost 10 years. This particular weekend has a public holiday on the Monday. One of the clubs holds their shows on the Sat & Sun, The other two (incl mine) do Sun & Mon. Last year one of the judges judged at both the others and then visited ours on the Monday for a rest.
With those sort of distances involved we don't compete for resources and all three clubs have been able to thrive, and the public has a choice.
rgds