Absolutely.

I would recommend upgrading the outbound. Purely for CCR experience and also it is, as you say, a daytime flight.

The first class bed can be made up for the kids and they will love having all the space and large tv for them to watch. Meanwhile you and your partner can enjoy having dinner together while watching over them (if you select a pair of middle seats).

On the way back I might stick to CW, taking an aisle and 2 middle seats so someone can be with the kids - tho unsure if you'll use a bassinet

Happy flying.