Can someone look at my calculation spreadsheet?

[Danny Day]

I'm working on developing my system for ARV calculation and max offer calculation.

This spreadsheet is based on sq. foot of house, ARV, loan terms, etc.

*** I am posting this because I am not sure about the calculations of this spreadsheet. DO NOT base your valuations / estimates on this current sheet ***

I know the rate of return is off. I need to work on that, but everything else seems to be right.

http://www.4shared.com/file/CwteKbXr/houseflip_spreadsheet.html

Thanks

Danny