Generally there's a Tales of gathering that is forming each year. There's talks over on cosplay.com that you may want to check out in the Otakon boards.
But I know I have plans on at least cosplaying Yulia from Abyss for Otakon.
I'm sorry, you may want to find another Gino. My friend and I have a deep deep hatred for Kallen after R2, and being the major Gino fans we are, we really don't like that pairing. Sorryy~ XD;
A few ideas I have in store for Otakon 2009:
V.V. - Code Geass
Ceil - Kuroshijitsu
Saralugei - Kyou Kara Maou
Yulia Jue - Tales of the Abyss
Simon (fantasy version) - Tengen Toppa Gurren-Lagann
Possibly one or two more may come with me by then.