In the real world it comes down to a number of factors: Time, money, a good idea you can see though to the end. I myself, like many, have the same constraints.
TIME: Difficult to make
MONEY: Never enough spare cash, especially with this government!
However the two are linked. If cash is tight then it takes longer to do. This brings into play "the good idea" bit. If a project is going to take a long time then you have to be sure it's the right way to go.
is a great idea. Cheap to get something running. Can be personalised in a million different ways.
You have some fantastic, unique G12 rolling stock. You have done the hard bit
It's your call at the end of the day but this is the way I would go if I had not pulled my figure out and got Lutley Engineering
up an started.
It has been a distraction though. I now have Simplicity Mine, A duel gauge version, a Gnine/Gn15 version and..................................all in my head.
I'm sure whatever YOU decide the support will be there in bucket loads.