There is one other case to consider,
where one of the electron is slightly displaced as shown. We see that resultant forces act on the electrons to keep them furthest apart at a distance of 2re.
So, for the case where the electrons are on opposite sides of the positive charge,
mec2re=q.2q4πεor2e−q.q4πεo(2re)2
re=7q216πεomec2
re = 7*(1.60217657e-19)^2/(16*pi*8.8541878176e-12*9.10938291e-31*299792458^2)
re = 4.9314e-15 m
If we check this against the atomic radius of He, 31e-12 m. This value is much lower. Mass of the electrons are too small to consider gravitational pull. If we consider the fact that the electron charge may be higher because of the dialectic effects of oil in the oil drop experiment, e→3e.
re = 4.4382e-14 m
is still lower, than the published He atomic radius.