when I work (3 days) girls eat at 5ish, I sit with them and have a cup of tea and ask about school etc
they go to bed at 7pm, we eat at 7.15ish, dh finishes off preparing dinner while I do stories
the other 4 days, we all eat together at 5.30pm, dh gets in at 5ish
for you I would suggest:
children eat at 5ish, you can sit with them and ask about their day etc, you clear up kitchen, do baths, get them in pj's
dh comes in, he does stories, while you warm up your dinners
you sit down and eat when children are in bed
leave the dishes for the morning OR dh sorts it out
then you can do your mosaics/filing