Reggie McGigas, you don't need acceleration for the other types of Energy. Sacrifice attaches Energy directly from your discard pile; didn't you notice? That is your acceleration.
With the use of a Junk Arm, Ultra Ball, Computer Search, Regice LA, or any card that discards 2 cards from your hand, a T2 Giga Blaster is possible.
Regigigas LV.X needs no improvement.