i am very new to this hobby i am finding it very hard to make a layout i think im overthinking everything. i think for harcourt street station the station is above street level which is all good but how high should that be right would like 3 feet height be enough or would i need to be bit higher. way im measuring is using a 00 1.76 dublin bus model so to get the scale right. now from there the layout would go to milltown viaduct then from that the layout goes to dundrum after that foxrock. should i get the bare bones of it down first like wiring and track then add other things later