Reminds me of the skit of the two cavan men claiming they walked to the moon, describing the surface as rocky, barren, cold, devoid of any atmosphere whatsoever, only for it to turn out they'd gone to Belturbet..
Down from 6'8 to anywhere approaching 5', you might as well get a chassis custom built or scratchbuild yourself at that point, IMO
A GNRI 0-6-0 tender engine would be the most common type for the job, one would imagine.
They did have the hawthorn leslie crane tank, which would be an unusual model!
Some version of the Bulleid Light Pacific probably would've been a simpler investment than the turfburner!
That said, CIE in the 50s really did seem to believe she would be the first in a fleet of turf or oil burning type locomotives, at least until Bulleid retired.
I'm hoping they get around to the rebuilt Bulleid Pacifics!
Maedbh in GSR green would've probably seen most mileage. Maedbh and Macha racked up high mileages in their early years before the "Phony War" ended, coal became scarce and timetables cut back.
My guess would be Maedbh in GSR green and Tailte in light green. Maedbh and Macha in dark (FS) green after that. Tailte had a high mileage by 54-55, which is why she was withdrawn first. (She was generally considered the most reliable)
Maedbh (GS) and photo grey obviously have barely seen a wheel turn, and Macha in dark green with the light tender would've seen little work.