Todays Analysis:
As you might know, the relation K/V=−1 only holds for two points (for real elliptic orbits) of a trajectory and is not the general solution. This is no problem for the S1 orbits but all the others...
Also mc2 is mere speculation as you cannot accelerate an electron to c. Further the electron mass on deeper orbits classically should increase... What also Mills neglects as this would mess up his force equation.
This only tells that such simple models only should be used in the limit of an equivalence relation and not to predict anything new...