The only issue you have is owning a bike no one has ridden, or will ride. Plus steel is 30+ years past its prime, so you’ll be hard pressed to get a lot of comparable input. Even though BF has a large steel contingent.
I would imagine a number of C&V people have ridden carbon but you need to be able to point to an 80’s bike that is similar enough to your Seven to have any chance of a valid suggestion.
If you want to move on, hang the Seven up, try out bikes, and adjust. A good frame, wheels, and components go a long way regardless what it’s made of.
John