Need advice on new track size

I'm afraid the outer track might be to big..?

Space is not the issue, have plenty. Want to make sure the track, ABOVE ALL, is very FUN! The "Theory" with the inner track would be for smaller cars (1/18th stuff), but I think it's bigger than needed for 1/18, but has the added appeal of being able to handle a "short track" night, now and then with the bigger cars

Thanks for looking and comments.

https://www.ssl-stormerhobbies.com/pics/our_dirt_oval.jpg

looks like a blast. my local carpet track is 100' long, and we ran min-t's and such on there with no problem, and the racing was fun with such a big track. With the size of the larger track, it would be ideal for nitros and your mod class electrics