The 4.5 mile version is the short version I think (where you just go to the overlook a d don’t up to the battery). Also note that counts from the lower town, and you need to either shuttle or walk from the parking area into town.
I don’t think the short version is that strenuous but it does have some uphill sections as I remember.
Could do Weaverton Cliffs if you want a shorter probably easier trail?