I agree with Belfegor, the total with 1 Str = 45 Weight is very reasonable, and it still keeps the server in balance.
1 Str = 45 Weight = 300 x 45 = 13500 / 30 = 450 Berries
1 Str = 30 Weight = 300 x 30 = 9000 / 30 = 300 Berries
So yeah, its still balanced. Its just an extra 450 Berries, but that would be decreased with armor weight, weapon weight, EDP weight (SinX), so yeah, its all basically the same.
-Fr0z3n