As somebody who went down a similar path, I would tell you that its worth it, but it is a very long and expensive process. Especially since your car has fairly severe structural damage. The cost to fix it, including tools, parts, labor, and paint and body work will cost you close to double what it would cost to buy a non-wrecked car like that one with a nice body. The type of work involved will be fitting sheet metal such that all your trim and all your windows and doors fit correctly.
I wrecked mine and bent the frame when I was 20. At that age, you do not make much money to survive and pay your bills, let alone have a project car, which is an expensive ontaking. If you do decide to keep it and repair it yourself, plan on it taking all your time and money for the next 5 years.