Well that's an exaggeration, but yes, if you don't adjust accordingly some would see it as OP. You're still at the bottom end of offense, it just means you're not squishy—which I think should be the case for "defenders". These issues can be corrected with set recharge times and/or as oedipus_tex suggested, you lower the self cast effect. The idea though that hero/villains can cast powers on others but not on themselves has never really sat well with me.