Roger1,
Hay the 027 stuff is real cool, in may ways I would like to have enough space to put both up for Christmas myself. If you are looking to acquire a Tin Plate engine that will
run thru your 027 switches the 263E Lionel original will do it and so will the Repro 263E MTH made, the 027 switches will also accommodate the 800 series rolling stock.
The Crane Car has a little problem if you don't keep the speed down however. You can get away with combining your 027 tack with the bigger O gauge switches by building graduated wooden track ties, in and out of the switches, works real cool and you can then use the incredible 711 switches, we use to do it all the time to incorporate both O and 0-27 track & switches on the same layout. Hope you have lots of fun engineering your Christmas layout!
PCRR/Dave