Is there some limit to the number or is the cell num going to go on forever ? Even if this is just a personal project that's not going to really break anything if it breaks, you might want to use it as an opportunity to think about "what if its still runnning a year from now? Are the 365 cells overkill?" That kinda stuff and try to come up with a nifty idea to manage that amount of data.

-brad..