"Wow ! Where do I start."
I don't know how closely this relates to K&N but somebody I was happy to call a freind in modelling was in business for himself employing several people and when the days work finished at around 5pm he went over to a building where he had an NZ120 scale layout perhaps twenty feet square and put in a hour or so until going to his house [ all these on the same property ] for dinner.
In addition to the NZ120 layout he had started with a modula layout of the 1880's railway between Port Chalmers and Dunedin. Also NZ120. This is I believe in the Early Settler's Museum. He was a member of the local model engineering society where he inspired the construction of some twenty 4x2 modules also in NZ120 constructed by him and several members. When the Society found maintaining a 1:1 traction engine was too much and put it up for auction he pre-empted the bidding by offering what he thought was a fair price well above any of the bids. The engine went to live at the local gasworks where he was also an active member to be re-boilered and run in several parades. Meanwhile he built a 5" Battery powered diesel profile loco and then , not sure which came first, a 7.25" gauge petrol powered 0-4-0 shunter and a G gauge version for the G gauge layout he built and I helped him to run at exhibitions ... I have a small collection of NZ120 also .... finally as cancer sadly took hold of him he was building a 7.25" live steam loco.
Earlier he had built on his property a 5"/7.25" dual gauge railway where while doing the hard slog himself ... I visited him one sunny day to find hiom in vest and underpants shifting rocks for an embankment [he was probably in his seventies then]..... he was able to call on expertise from various freinds he had made over the years of modelling. I forgot to mention he was also involved in the restoration of a NZR P class loco [ 2-8-0 ] rescued from a river where it has been dumped as flood protection.
Basically he was a dynamo who made many freinds through helping others and they repaid him when he needed help with the outdoor layout. He also had a short G line along the top of a fence becuase his wife's sheep had to be avoided. This was featured in Garden RAIL some years ago.
So I guess you have to be organised to produce what K&N and he did in both your life and your modelling.
Big and Little TR's with the traction engine. The Late John Rappard