Erik Westra@liztai 1000 characters should be doable, depending on how good the flashcard system is in Tofu. I've been working through James Heisig's book "Remembering the Traditional Hanzi", and am up to 740 characters after 3 months. That's a lot more time-consuming than what you're doing, as the book requires you to work out mnemonics to help remember each character, but I'm steadily doing 10 characters a day. With your experience, you'll definitely get to 1000 characters by the end of the year.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.