On right track?

I have just begun a sub-project in this year's model making season, i procured a number of old Airfix railway rolling stock kits (2 locomotives and 5 wagons) and will build a little train. The first two kits Projects 030 and 031 are in production at the same time as they are the same kit (just one is in an even older box) though i only have the instructions for one so i thought it prudent to build both at the same time. Building was fairly simple but painting has come to a halt because i did not have the right grey colour so i am waiting for that to be delivered now.