Yes, use RF for transmission and direct energy storage. Energy Conduits will convert to MJ automatically as needed.
And, if you really need to convert from MJ to RF, I believe you can use Ender IO or Mekanism.
But, there are some MJ producers here and there like the Peat-Fired Engine that are cool not because of MJ, but because of the other things they do.
EDIT : Freakin' gangs of ninjas, running around, ganking me
Smiles @rhn and @Padfoote ;-)
And, if you really need to convert from MJ to RF, I believe you can use Ender IO or Mekanism.
But, there are some MJ producers here and there like the Peat-Fired Engine that are cool not because of MJ, but because of the other things they do.
EDIT : Freakin' gangs of ninjas, running around, ganking me
Smiles @rhn and @Padfoote ;-)