Hi Christopher (and Chris),
... Contact a Structural Engineer/Architect for professional guidance. Depending on the current roof loads and such, from here, only an 'educated guess' can be made.
Or, contact a Builder to do see what he has to say.
Either that, or read How to determine loads and Truss & Span Tables, and start reading to bring yourself up to speed.
If none of the above, just take a few moments to think of how you're gonna explain to your Home Insurance Company why the attic is now part of the 2nd floor.
My best to ya and hope this helps.
Jay J -Moderator
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