What do i need to change on my DCF model if it asked to ''Ensure that the DCF properly handles purchase accounting adjustments (e.g., double-check the Cash Taxes on EBIT calculation) ?''    

What exit multiple are you using?  What WACC and terminal growth rate?  I'd estimate that a ''typical'' WACC of around 10% and a ''typical'' long term nominal growth rate of around 4% correspond to a ''typical'' EBITDA multiple of around 7.5x EBITDA.  My guess is that your perpetuity assumption is fairly disciplined, avoiding an ...