It's a great kit, despite its age. There can be fit issues, especially with the canopy, but nothing the average modeler can't overcome. I built it when I was a kid, and it was just released, and it was a lot of fun! And even more was Shep Paine's diorama brochure that was included in those original releases.
I get to see a 1:1 Black Widow undergoing restoration down at the Mid-Atlantic Air Museum outside Reading PA. It's slow work, but the goal is to get her flying again someday. That will be very cool!
I look forward to seeing your build!