I've been contemplating fiddling around with similar track too. I'll be staying OO as I couldnt logically afford to rewheel everything I've got an then I do love a bit of HO to run too. I've been following this thread on RMWeb and trying to get my head around things http://www.rmweb.co.uk/community/index.php?/topic/89279-finescale-oo-track-where-to-start/page-2#entry1574213