You can't calculate the hardware and power together, because hadware is something you can sell again.
where ist the 5870? (best w/h card in my calc)
1: As long as you're mining, you can't sell the hardware. In the end you'll have to mine (converted to EUR/USD/whatever) about as much as the "costs after x days" column says minus what you could sell your hardware for (as there is no predefined value, I didn't include that). I also didn't include difficulty increases + projected income, as this is far too speculative.
It would be up to you to guess how much a used card might be worth after x days.
2: Just add it yourself?! It's not rocket science and I did this sheet in ~15 minutes.
If you want to have it from me, I could also sell it - 1 work hour @ 20EUR means this sheet is worth 1 BTC. PM me for an address.