I know that your car as purchased is already "apart" somewhat, so going the "extra miles" to pull the body off the frame seems the next logical step. Just a word of caution that it's hard to know when to stop (I guess you could say "when you're out of nuts and bolts and fasteners to catalog") and you are entering a time warp in terms of hours of commitment. Note I said "extra miles" not "extra mile"
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When I took my 1962 Impala totally apart, it took me over 1200 hours and about 2-3 years of consistent effort (a few hours every day, lots of hours on the weekends). It also requires that you have multiple spaces to house and to clean and organize the various components. I had a lot of help, a shop with a lift, but was limited to a two car garage. Would have been nice to have had twice that space. Watch an episode of any car show on TV and you'll be envious of all the space and equipment that they have on hand. Just like Robert Shaw said in Jaws: "We're gonna need a bigger boat" -- that will be the case.
Don't mean to dissuade you but thought I'd pass along a little experience in doing a body off restoration. I'd go for it if I had the means. In fact I'm in the very beginnings of one right now, and I get stalled quite often. More like "side tracked" by the realities of work and social obligations
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I'm sure others will chime in with their opinions. Good luck!
TomK