Phil, that is certainly an option and one I'm considering quite heavily, the only downside is that if you pick a non depot, works or line side industry you then have to have full length trains running, which in the garden (a project in germination LOL) is possible but not inside.
Speaking of running trains, or more rightly 'playing' trains I went to the local Gauge 1 exhibition they staged today at the leisure centre, whilst the roundy roundy was impressive it wasn't as big as it could go, there were some trader stalls and other bric a brac so I wasn't expecting NEC but went with an open mind and basically stood and watched what everyone else was doing and took some photos. Clearly these models are made to run, there is little fidelity about them, but run they do and do have a fascination that is compelling, the mass of live steam brass over the main crossovers is impressive especially the 9Fs and they do give the crossing noses a solid thump as they cross, didn't see any compensation or springing here, all looked to have a rigid chassis construction.
Whilst it certainly had the feel of a local fete it did have its plus points when compared to other Gauge 1 roundy roundys I've been too, the biggest being no barriers what so ever, you could actually get 'really' close to the models, so whilst appearing an amateur approach, it actually worked very well as it allowed people to get in close and more importantly those of the future generations to experience large scale trains close up.
Several salient points became clear, its fun, the average age of the members appears high (expendable cash? eg those with small/no mortgages?), most of the stock was ready made (again expendable cash?) and live steamers are a faffing chore, I see the appeal, but blimey they are bloody hard work, when they run, they run well but often as not they stall or end up running away with themselves. There was one radio controlled battery GWR Prairie and that looked the most fun of all, it was used to shunt stock in and out of the sidings for the live steamers and did sterling work (note to self, live steam is not for me), all the live steamers were hand pushed in and out of the depot serving area, a distraction for me but for the owners did not figure in their 'world' at all.
I spoke at length with a former work colleague who was running a single cylinder LMS 0-6-0 4F, it did not fair well being single cylinder, corners being their Achilles heel in that it generates so much drag that they run short of steam and require some straight lengths to recover, twins do not suffer the same effect.
The other revelation was that if I was going to get something running in the near future I had a few limited choices, buy ready built (expensive), buy a kit (less expensive but costly in time and less choice), scratch build (already on that path), it was the scratch build aspect that threw me, whilst planning many grandiose projects I suddenly realised that even what I considered a constrained approach was way to exuberant to get something running in the near future (less than 12 months say).
Where does this leave me? in a bit of a quandary really LOL, anyway some pictures for those who like that sort of thing.
The servicing area which actually looked like a 1:1 depot
An Aster 9F, quite a few of these here today
A scratch built what looks like a Highland Railway loco
The battery Prairie, Bachmann Brassworks I believe
Gauge 1 Model Co Britannia
Unknown source K2
Finally a 1/4 scale traction engine from a local builder, ironically from the same village I grew up in, not a train but superb engineering, took 5 years to build which given the depth and quality I think is dashed good going!
Enjoy
Addendum, added one final low level shot of the traction engine.