Pls understand me,
I’m not US resident and also not expert at US regulations and rules. From basic principle as I see your question, my first idea is - Route type. This means basically some kind of lower/higher sector routes, depended to local Country rules. On other side if we can sit to DC3 f.ex. without GPS, it could be quite different. VFR/IFR/VOR/NDB/ILS/RNAV/GPS/VNAV… Your decision about routing need to be set due your airplane setup and also what do you want
I can have pretty Mercedes equiped TBM and instead I want fly under VFR
Little bit tricky decision…
Ok, little hint, due safety regulations you can see at routes also min altitude value.
Ok, if we try set that easy now without that DLH and route type, FPL can be in my opinion: DCT GEP J114 FSD DCT
eeeeeehm now I noticed that our friend has delete his post. Shame, nothing bad inside his post.