Thanks for the info I bought a Life like HO set at a local auction for 7 bucks came with power supply locomotive tracks and 8 cars. I was wanting the info on the N and z scales to see if they would be more suitable for the area I will set up the set I have and see how he does Thanks Again

Hello this is Tim I have a 3 year old and a 1 year old that absolutely love trains. We visited the model train expo  here in Indianapolis about 2 months ago. My 3 year son has not stop talking about it. I was thinking of setting up a display in part of my garage for him to watch and help build. I have a area of around 4 feet wide by 6 feet long for the display what would be the best scale size to use n or z to get the most out of the space or should I go maybe go Little bigger please help Also what would be a good starter set that I can buy and add more track and items for later Thanks Tim