My friend, you need to depreciate the fixed assets and subtract those costs from EBITDA before applying a PE Ratio. Since we do not yet know the depreciation expense, it would be more appropriate to use a lower PE Ratio of 10 which would factor in some or all of the depreciation costs of the computer equipment. Otherwise, excellent post.
(The acronym btw is EBITDA (earnings before income tax, depreciation and amortization), not EBIDTA)