Post updated, didn't realise derp.
I'll be pushing a 0.6.2 which should bring the mod itself in line with the calculations on the OP, as soon as I can get time to set up a dev environment for the latest IC2 and 1.6.4.
You SHOULD be able to run 0.6.1 on MC 1.6.4, I used srgname obfuscation.
(Gee, why the hell do I keep screwing up?)