You can get much more manageable, flexible, extendable, and portable flashcards on your PC for free. Try reading
this explanation about SRS. You really can't hope to manage 2000 kanji flashcards yourself in the same way over the next few years, let alone 10,000+ vocabulary ones. I use the program mentioned in the explanation, but
http://smart.fm is also quite popular.
As for learning kanji, if you can handle learning 30 a day, you can get through all 2000 with Heisig's
Remembering the Kanji in under three months. Then you can use the above software to begin learning to read them through vocabulary reviews.
Edit: I thought you were talking about paper flashcards, I don't know what the JPod ones are like.