The 30719 is a Negai Boshi Jirachi, and the 50707 is a Tanabata Jirachi, and they are both still lv5 with no EXP. As for the Mew, it's still lv10.
So, if you wanted Absol, Celebi, Darkrai, KingDra, Jirachi, Jirachi and Mew, those would be 7 for 1 pokemon. I'm willing to trade 3 of those pokemon, since i don't have any copies of them, unless you'd like to wait 10 minutes so i can clone them in the GTS :/