Welcome to the forums!
We've seen a lot of variation in how much FICO scores increase when BK's drop off - it has a lot to do with what is on your report and how much rebuilding you've done.
It looks like you're getting your ducks in a row. Having that one credit card (especially if it's a bank/national CC) will definitely help your score.
You might want to pull at least one FICO here (ScoreWatch often has a free 10 day trial - just cancel before the 10 days to keep it free, or leave it open to track your FICO score rebuilding progress). The report that comes with the FICO score here will tell you the things that are helping and hurting your FICO score and it comes with a simulator that helps you evaluate how different future actions will impact your FICO.
BK's seem to always come off as sheduled. Not much of a problem for most folks. 
But check in with folks here if it's not off by April 2012. My guess is you'll be fine and you may see it dropping off as early as February - hey that's next month!