Jmdl,
Welcome aboard this great site, as you will gain a lot of good information. I wish I could help you with the Excel, but Rockintom has owned his for almost 5yrs, that should give you the best information you can find, especially from a long time owner. I'm a firm believer, check with someone who has owned one for some time, you'll get the right info. Jump in anytime, that's what this site is all about. Good Luck,
David G.