This is a pretty neat little tool, I like it.
Some tips for updates besides what you've already got there:
1) Add reminders for monster skill levels, ie tough = 1-2 levels higher, Very Tough = 3-5 (or whatever it is, I can't remember)
2) Clean it up, it's not visually appealing. I know it doesn't seem important, but as a programmer myself I'm still amazed at how often people judge applications by appearance first, and functionality later. My main issues are the location of the "Enter data in red cells", and the general appearance of the text at the bottom.
3) Since you're planning on adding Exp. Chain information, this would become a tool I might actually use while playing if you added in information on the timing in between fights to get an exp. chain. It wouldn't be very complicated once you had the data. It would just be handy to be able to click at the end of every fight to get a timer that told how much time until the mobs next death.
I think it's cool though. Thanks for letting us check it out.
