I wouldn't condemn it as loe-end just b/c of the centerpulls. They were standard issue on a pretty wide range of bikes in the 70s. 1970s is where I'd place that bike. My wife had a Fuji 12 speed which sounds pretty similar to yours except hers had DiaCompe sidepulls. It was labelled as a Fuji Supreme" with "12 Speed" decals on the chain stays. A decal that shows "VaLite" tubing would be telling but with a repaint it's probably gone.

I'd say something more along the lines of a midgrade bike but that's a guess.