My lens lineup
That's a nice setup!
For the newcomer and family you will most often want to use the 20mm and the 45mm. The are both great inside and outside. The 20mm is also an excellent "I was here" type of walkaround lens. You can put it on for city walks for example where photographing might not be the most important thing, but you still want to use a light and capable camera to capture the memories.
Also, the 14-150 is nice for walkarounds, since you can shoot basically anything you want. I think it's a good idea to use that a lot now and make notes of what type of focal lenghts you use most often, what you are missing and what it is good for. Then it's easier to buy lenses that work for you, when you actually know what YOU need rather than what other people need.
Those are some great choices and good luck!
"The day of the big camera wearing photographer with a large beard and photo vest is over." -Giulio Sciorio