Is it worth it?

[Tim Lee]

I was referred to this house by a realtor which is going for $275k. 7beds 1 bath built in 1910, 2250 sq ft.  70% fire damage and city has liens against property. The comps around here are in the mid to high $500k. It is in a B to C class neighborhood. I am thinking its going to take at least $100k to redo everything. This would be my first flip so a little concerned if it would be a wise decision to start here. If comps are true it would be a worth while payout. I am a new at this so what would you veterans do?