Evening Jimmy B
I have several Otto type locos on battery power , getting down to clean track is ok , its the getting up bit !
Have a look at LGB Feldbahn wagons and coaches , or Hartland open wagons . I have used them with my Feldbahn
locos.
If you are still looking for some thing , and going to Exeter Garden Rail show at the end of the month , look us up.
Good Luck