Sounds good, Mark. It's always good to thin out the stock every once in a while and concentrate on what you really like. There's an old adage about clothes that says if you haven't worn something in over a year, it's time to get rid of it. I'm not sure it's the same for model railroading, but you get the point.
You've now focused on what you really like and what works for you rather than just randomly collecting stuff and that's a good thing. You'll be ready to go once the layout is done.
