Currently I do not have a layout and have instead been using a mixture of track to make a simple oval as my test track. Which was assembled on the dining room table, and thus a temporary set-up that was problematic to assemble (and disassemble).
So instead I will use some Kato Unitrack to form an oval, the main benefit for me is that Unitrack is designed for repeated assembly (and disassembly).
As shown in the diagram above I can have it on my computer table. If needed I can also have it on the dining room table but that requires reducing the quantity of straight sections used.
I have just ordered the required track to make the loop.