Been a bit frustrating that i haven't been able to go very far with this project. That's because i need an Airfix Saturn 1B 1/44 kit before a i can glue parts on, plus need to have the dimensions of parts to make other parts. Its doubly frustrating in that the kit is pretty rare, and therefore goes for big bucks when it does appear.
But just got one off eBay for a very resonable 27 quid so awwaaaaay i go. Here's the two main parts that i needed, just plopped in place for the pics.