If I had it to do over I would find a great restored project that somebody has gotten tired of and purchase it. Naturally I would fly to the location and personally view the car before the purchase.
By the time you buy a car, complete a restoration-refresh of some sort, replace body panels, replace interior parts, work on some engine issue, exhaust, and so forth- take two or three years to complete, and spend much more that you budgeted it would be a lot easier to take your time - and purchase somebody elses project.
So- Whats a Datsun 240Z worth - It's worth (to you) whatever you have in it!!
So - would I do the restore-refresh again - IN A HEARTBEAT!!