Another spreadsheet alternative is MiniCalc. Very powerful and also has a "Office Suite" of additional programs for a minimal amount of more money.
Spreadsheeting your W&B gives you the opportunity to customize it specifically for your needs.
I wrote one 'sheet that would calculate all my takeoff performance data, V speeds, etc. You can also if I remember correctly put weight limits on specific locations.
Another program that seems to be held in high regard is CoPilot. From what I understand it is free or close to it. Don't know too much about it as I have not used it. It does have W&B capabilities. It is the MOST (most downloads) popular aviation palm program out there. It might suit your needs.
Take Care & Good Luck!