I have to disagree with that last point. Dinosaurs lasted a LONG time, and while.early dinosaurs certainly had little feather coverage, such as stegosaurus, later dinosaurs, such as yutyrannus and therozinosaurus, were absolutely covered.
Now, there were not “feathers”, but feather like structures that eventually evolved into feathers in their descendants
If I had my current knowledge, low-level iron forging, agriculture, and architecture (cisterns, wells, deep food storage) and very rudimentary medicine because the wife is obsessed with various herbs that are used to make our modern medicine
If I was starting from scratch, probably just be decent at hunting because I have good hand eye coordination and maybe tracking
Small, flaky scales that protruded out from the body