So at the age of 60 I'm getting my second "Meccano set".
At least you're not alone at this"age"...(you feeling old?)
i'm from a 1955 very good wine year it seems,and still alive and kicking.
I start a complete re-build of a KVA MK3 which was standing still for the last 35 years.
just go for it, the only thing you will regret later are things you never did, for one or other reason....
good luck with the build
Paul