S.H.
·This might be where I land
For the low cost to assemble it, I can try it out. Worst comes to worst, I take it all apart and proceed with option 2 and sell the good stuff. I'll certainly recoup the money to wear it. At the same time, if I fall in love with it, I'll know where I stand in the future when lightning strikes and will keep it tucked away as @S.H. mentioned.
But realistically, all said, I think it will end up with someone else. It fell into my lap, and was never on my radar. Those two things alone make me think it's not in the right home.
Keep in mind that, like me, you can trade, not sell, for something that interest you in particular (and forget a bit the "market value"). Sometimes a rare item like what you have here can make something interesting appear. Cash on hand, not so much.